At the C1 level, "blast" as an adjective can describe phenomena associated with a sudden, powerful release of energy or force. This often pertains to the destructive
effects of an explosion, such as "blast wave" or "blast injury," highlighting the concussive impact. Furthermore, in specialized biological contexts, "blast" refers to cells in their earliest, undifferentiated stages, like "lymphoblast" or "erythroblast," which are crucial for understanding cell development and certain pathologies. Understanding these nuanced applications is vital for interpreting complex scientific and medical literature.
§ What does it mean and when do people use it?
The adjective 'blast' is often encountered in academic and technical discourse, particularly within scientific fields. While it might seem like a simple word, its meaning is precise and carries significant weight, especially when describing phenomena related to sudden, forceful events or early stages of development.
- Core Definition
- Describes something relating to a sudden, forceful explosion or a powerful, localized stream of air or fluid.
In its most common usage outside of specialized contexts, 'blast' as an adjective refers to things associated with an explosion or a strong, often disruptive, force. Think of the immense energy released during a detonation; anything related to that force can be described as 'blast'. This can include the physical effects of an explosion, such as the damage caused by a shockwave, or even the intense sound that accompanies it. Similarly, a powerful, concentrated gush of air or fluid, like that from a jet engine or a high-pressure hose, could be termed 'blast-like' or simply 'blast' in some technical descriptions.
The scientists studied the blast radius of the controlled demolition.
Engineers are designing new materials resistant to blast effects in high-stress environments.
In a more specialized and academic context, particularly in biology and medicine, 'blast' takes on a completely different, yet equally precise, meaning. Here, it refers to undifferentiated cells at an early stage of development. These are often progenitor cells, which have the potential to develop into various types of specialized cells but have not yet committed to a specific lineage. Understanding this usage is crucial in fields like hematology (the study of blood) and developmental biology.
- Biological Context
- In biology, it often refers to undifferentiated cells at an early stage of development.
For example, in the context of blood cell formation, 'blast cells' are immature cells found in the bone marrow. These cells eventually mature into various types of blood cells, such as red blood cells, white blood cells, and platelets. The presence of an abnormally high number of blast cells in the blood or bone marrow can be an indicator of certain conditions, including leukemia, a type of cancer that affects blood-forming tissues.
The pathologist identified an increase in blast cells in the patient's bone marrow biopsy.
Researchers are studying the differentiation pathways of various blast cell populations.
Therefore, when encountering 'blast' as an adjective, it is essential to consider the context to determine its precise meaning. In engineering or physics, it will likely refer to explosive forces. In biology, it will undoubtedly relate to early, undifferentiated cell types. This duality underscores the richness and specificity of scientific vocabulary, where a single word can carry distinct and important meanings across different disciplines.
- In physics and engineering:
- Describes effects or characteristics related to explosions.
- Refers to powerful, concentrated flows of air or fluid.
- In biology and medicine:
- Describes cells that are undifferentiated and in an early stage of development.
- Often associated with progenitor cells or immature cell forms.
Understanding these nuances is key to accurately interpreting academic and technical texts at a B2 CEFR level and beyond. The precise application of 'blast' as an adjective showcases the need for careful contextual analysis in specialized language.
§ Academic and Technical Fields
The term "blast" (adjective) finds significant usage in academic and technical domains, particularly in fields such as engineering, physics, biology, and medicine. In these contexts, the word carries precise meanings that go beyond its more common, informal uses. Understanding these specific applications is crucial for anyone engaging with scientific and technical literature.
- Definition in Physics and Engineering
- When referring to a "blast wave" or "blast effect," it describes phenomena associated with sudden, high-energy releases, such as explosions. This can involve the rapid expansion of gases and the creation of a shockwave that propagates through a medium.
Engineers are studying the structural integrity of buildings to withstand a blast impact.
- Definition in Biology and Medicine
- In biology, particularly in hematology and oncology, "blast cells" or "blasts" refer to immature, undifferentiated cells, often indicative of rapid cell proliferation, such as in leukemia.
The patient's bone marrow biopsy revealed an unusually high percentage of blast cells, suggesting acute leukemia.
§ News and Current Events
In news reports and discussions about current events, the adjective "blast" is frequently used to describe events involving explosions, intense forces, or their consequences. This usage is common in reporting on accidents, conflicts, and natural disasters.
- Reporting on Explosions: News outlets often describe incidents involving explosives, such as terrorist attacks, industrial accidents, or controlled demolitions.
- Military and Conflict Reporting: In military contexts, "blast" refers to the effects of weaponry, such as bombs or artillery shells, and its impact on structures and personnel.
- Natural Disasters: While less common, the term can occasionally be used to describe the forceful impact of natural phenomena, such as a volcanic eruption or a sudden gust of wind.
Rescue workers are still assessing the damage caused by the blast from the chemical plant explosion.
§ Everyday Language (Informal)
While the definition provided focuses on its more formal and technical uses, "blast" can also appear in informal, everyday language, often in a metaphorical or idiomatic sense. However, these uses are generally less frequent for the adjective form and might deviate slightly from the precise meanings given in academic and technical contexts.
- Figurative Usage: Sometimes, people might use "blast" to describe a very strong or impactful experience, though this is more common with the noun form ("a blast of cold air" or "had a blast").
The sudden blast of wind almost knocked me off my feet.
按水平分级的例句
The blast wave from the explosion caused significant damage to nearby buildings.
The wave from the explosion that spread quickly.
Here, 'blast' acts as an adjective modifying 'wave'.
Engineers are studying the blast effects of different materials to improve safety.
Engineers are studying the impact effects.
Here, 'blast' functions as an adjective describing 'effects'.
In biology, a blast cell is an immature cell, for example, an erythroblast or myeloblast.
In biology, an immature cell.
Here, 'blast' is part of a compound noun 'blast cell' often seen in scientific contexts.
The strong winds created a blast of cold air that swept through the valley.
The strong winds created a powerful gust of cold air.
Here, 'blast' is used as a noun, but the adjective form would be 'blasting wind' to describe a wind that feels like a powerful stream.
They designed the structure to withstand a significant blast force.
They designed the structure to resist a strong explosive force.
'Blast' here is an adjective modifying 'force'.
The research focuses on the blast resistance of various protective gear.
The research focuses on the ability of protective gear to withstand explosions.
'Blast' acts as an adjective describing 'resistance'.
A blast furnace uses a powerful blast of hot air to smelt iron ore.
A furnace that uses a strong current of hot air.
'Blast' functions as an adjective modifying 'furnace'.
Medical professionals refer to certain early-stage tumor cells as blast cells due to their undifferentiated nature.
Medical professionals call some early-stage tumor cells 'immature cells' because they are not yet specialized.
'Blast' is used as part of the compound noun 'blast cells' in a medical context.
The engineers carefully assessed the structural integrity of the bridge following the recent blast incident, checking for any subtle deformations that might compromise its safety.
Инженеры тщательно оценили структурную целостность моста после недавнего взрыва, проверяя наличие каких-либо незаметных деформаций, которые могли бы поставить под угрозу его безопасность.
Here, 'blast' functions as an attributive noun modifying 'incident', indicating the type of incident.
Forensic investigators meticulously analyzed the blast patterns on the surrounding debris to reconstruct the sequence of events leading to the explosion.
Судебно-медицинские эксперты тщательно проанализировали картину взрыва на окружающем мусоре, чтобы восстановить последовательность событий, приведших к взрыву.
'Blast patterns' refers to the characteristic markings left by an explosion.
During the early stages of hematopoiesis, pluripotent stem cells differentiate into myeloid and lymphoid blast cells, which then mature into various blood components.
На ранних стадиях кроветворения плюрипотентные стволовые клетки дифференцируются в миелоидные и лимфоидные бластные клетки, которые затем созревают в различные компоненты крови.
In a biological context, 'blast cells' refers to immature, undifferentiated cells.
The wind tunnel experiments simulated extreme weather conditions, including a powerful blast of air, to test the aerodynamic stability of the aircraft design.
Эксперименты в аэродинамической трубе имитировали экстремальные погодные условия, включая мощный порыв воздуха, для проверки аэродинамической устойчивости конструкции самолета.
'Blast of air' signifies a sudden, strong current of air.
Researchers are developing new materials with enhanced resistance to blast forces, aiming to improve the protective capabilities of military vehicles and civilian infrastructure.
Исследователи разрабатывают новые материалы с повышенной устойчивостью к взрывным нагрузкам, стремясь улучшить защитные возможности военной техники и гражданской инфраструктуры.
'Blast forces' refers to the destructive power generated by an explosion.
The geological survey revealed evidence of a prehistoric meteor impact, characterized by a massive blast crater and widespread seismic disturbances.
Геологическое исследование выявило следы доисторического метеоритного удара, характеризующегося огромным ударным кратером и широкомасштабными сейсмическими возмущениями.
'Blast crater' refers to the depression formed by a powerful impact or explosion.
In oncology, the presence of an elevated number of blast cells in the bone marrow can be indicative of certain types of leukemia.
В онкологии наличие повышенного количества бластных клеток в костном мозге может указывать на определенные виды лейкемии.
Again, 'blast cells' refers to undifferentiated cells, specifically in a medical context.
The sudden blast of cold air from the air conditioning unit caused a noticeable drop in the ambient temperature of the server room, requiring immediate adjustment.
Внезапный поток холодного воздуха из кондиционера вызвал заметное падение температуры окружающей среды в серверной, что потребовало немедленной регулировки.
'Blast of cold air' emphasizes the sudden and forceful nature of the air current.
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真实语境
The **blast** furnace operated at extremely high temperatures to melt iron ore.
- blast furnace
- high temperatures
- melt iron ore
Scientists studied the effects of the **blast** wave on nearby structures.
- blast wave
- studied the effects
- nearby structures
In biology, a myeloblast is an immature cell found in bone marrow, sometimes referred to simply as a **blast** cell.
- blast cell
- myeloblast
- immature cell
- bone marrow
The engineers had to account for the potential **blast** radius in their safety plans.
- blast radius
- safety plans
- account for
A sudden **blast** of wind nearly knocked him off his feet.
- blast of wind
- sudden blast
- knocked him off his feet
对话开场白
"Can you think of any situations where a 'blast' might be used to describe a sudden, powerful force?"
"In what academic or technical fields might you encounter the term 'blast'?"
"How might the term 'blast' be used differently in a scientific context versus a more casual conversation?"
"What safety precautions are typically considered when dealing with potential 'blast' events?"
"Have you ever experienced a 'blast' of air or sound that was particularly impactful?"
日记主题
Describe a time you witnessed or felt a powerful 'blast' of something (wind, sound, etc.). What was the experience like?
Research the concept of a 'blast furnace' and explain its significance in industrial processes. How does the word 'blast' apply here?
Explore the biological meaning of 'blast' cells. What role do they play, and why are they named as such?
Imagine you are an engineer designing a building in an area prone to explosions. How would you incorporate 'blast' resistance into your plans?
Reflect on the different connotations of the word 'blast'. How can a single word have such varied meanings depending on the context?
自我测试 54 个问题
The wind made a ___ sound.
The word 'blast' means a loud sound, like from strong wind.
The loud music was a ___ to my ears.
When something is a 'blast to your ears', it means it is very loud.
The firework made a big ___ in the sky.
A firework makes a 'blast' when it explodes loudly.
A loud sound can be called a blast.
Yes, a 'blast' can describe a very loud sound.
A gentle breeze is a blast.
No, a 'blast' is a strong, forceful movement of air, not a gentle breeze.
When something explodes, it can make a blast.
Yes, an explosion often creates a 'blast'.
Listen for the sound of wind.
Listen for a sudden loud noise.
Listen for the feeling of cold air.
Read this aloud:
The loud blast scared me.
Focus: blast
你说的：
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Read this aloud:
I felt a blast of wind.
Focus: felt a blast
你说的：
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Read this aloud:
What was that blast?
Focus: was that blast
你说的：
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The ___ wind knocked over the small tree.
A 'blast' wind is a strong, forceful wind.
We heard a loud ___ sound from the construction site.
A 'blast' sound implies a loud, sudden noise, often like an explosion.
The fire hose created a ___ of water to put out the fire.
A 'blast' of water indicates a powerful, forceful stream.
After the explosion, there was a ___ crater in the ground.
A 'blast' crater is one formed by an explosion.
The car horn gave a quick ___ to warn the pedestrian.
A 'blast' here refers to a sudden, loud sound from the horn.
The workers used a powerful ___ of air to clean the machine.
A 'blast' of air means a strong, localized stream of air.
Imagine you are watching fireworks. Describe what you see and hear, using the word 'blast' to talk about the sound.
Well written! Good try! Check the sample answer below.
Sample answer
The fireworks made a big blast! I saw many bright colors in the sky. It was very loud and exciting.
Think about a strong wind. How would you describe the feeling and sound of a 'blast' of wind hitting your face?
Well written! Good try! Check the sample answer below.
Sample answer
A strong blast of wind hit my face. It felt cold and made a loud sound. My hair moved a lot.
Write a short sentence about a party. How could you use 'blast' to say you had a very good time?
Well written! Good try! Check the sample answer below.
Sample answer
The party was a blast! We had so much fun with our friends.
What hit the person like a 'blast' of water?
Read this passage:
Yesterday, I went to the beach. The sun was very hot, and the water was cold. Suddenly, a big wave hit me like a blast of water. It was surprising, but also fun. I laughed and played in the waves all day.
What hit the person like a 'blast' of water?
The passage says, 'Suddenly, a big wave hit me like a blast of water.'
The passage says, 'Suddenly, a big wave hit me like a blast of water.'
What comes out of the garden hose like a 'blast'?
Read this passage:
My dog loves to play with the garden hose. When I turn on the water, a strong blast of water comes out. He tries to catch it with his mouth. It is very funny to watch him play with the water.
What comes out of the garden hose like a 'blast'?
The passage states, 'When I turn on the water, a strong blast of water comes out.'
The passage states, 'When I turn on the water, a strong blast of water comes out.'
What did the person hear against the window?
Read this passage:
Last night, there was a big storm. The wind blew very hard. I heard a loud blast of wind against my window. It made me a little scared, but my parents said everything was okay.
What did the person hear against the window?
The passage says, 'I heard a loud blast of wind against my window.'
The passage says, 'I heard a loud blast of wind against my window.'
Imagine you are describing a very windy day to a friend. Use the word 'blast' in your description to talk about the wind.
Well written! Good try! Check the sample answer below.
Sample answer
Yesterday, the wind was incredibly strong. There was a sudden blast of wind that almost knocked me over when I walked outside. It felt like a hurricane!
Write a short sentence about something that made a loud, sudden noise. Try to use the word 'blast' to describe it.
Well written! Good try! Check the sample answer below.
Sample answer
The fireworks made a loud blast that echoed through the night sky, startling everyone.
Describe a moment when you felt a sudden burst of energy or excitement. How could you use the word 'blast' to convey this feeling?
Well written! Good try! Check the sample answer below.
Sample answer
When my favorite team scored the winning goal, I felt a blast of excitement and jumped out of my seat.
What caused the building to collapse?
Read this passage:
The old factory building was scheduled for demolition. Engineers carefully placed explosives. At exactly 10 AM, a loud blast shook the ground, and the building collapsed into a pile of rubble. It was an impressive sight.
What caused the building to collapse?
The passage states, 'At exactly 10 AM, a loud blast shook the ground, and the building collapsed.' This indicates the blast was the cause.
The passage states, 'At exactly 10 AM, a loud blast shook the ground, and the building collapsed.' This indicates the blast was the cause.
What is described as a 'blast' in this passage?
Read this passage:
During the winter, cold air often rushes in from the north. Sometimes, there's a sudden blast of freezing air that makes you shiver even when you're inside. People usually wear very warm clothes to protect themselves from these blasts.
What is described as a 'blast' in this passage?
The passage says, 'Sometimes, there's a sudden blast of freezing air that makes you shiver.'
The passage says, 'Sometimes, there's a sudden blast of freezing air that makes you shiver.'
Why are some cells called 'blasts' in the scientific context mentioned?
Read this passage:
Scientists are studying a new type of cell. These cells are called 'blasts' because they are very young and haven't developed into specific types yet. Understanding these blast cells is important for learning how organisms grow.
Why are some cells called 'blasts' in the scientific context mentioned?
The passage explains, 'These cells are called 'blasts' because they are very young and haven't developed into specific types yet.'
The passage explains, 'These cells are called 'blasts' because they are very young and haven't developed into specific types yet.'
This sentence is about industrial processes.
This sentence is related to biology.
This sentence refers to a physical impact.
Read this aloud:
Can you explain the difference between a blast furnace and a regular oven?
Focus: blast furnace
你说的：
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Read this aloud:
Describe a scenario where a 'blast' of wind could be beneficial or detrimental.
Focus: blast of wind
你说的：
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Read this aloud:
Discuss the implications of studying blast cells in medical research.
Focus: blast cells
你说的：
Speech recognition is not supported in your browser. Try Chrome or Edge.
Imagine you are an engineer designing a new protective barrier. Describe how you would account for the 'blast' force of an explosion in your design, using technical language.
Well written! Good try! Check the sample answer below.
Sample answer
In designing a protective barrier, it's crucial to consider the blast force generated by an explosion. My design would prioritize structural integrity, utilizing materials capable of withstanding the immense pressure wave. Incorporating shock absorption mechanisms, such as energy-dissipating layers, would further mitigate the impact. Careful calculations of the blast's potential magnitude would inform material selection and thickness to ensure optimal protection.
You are a biologist explaining 'blast' cells to a new student. Write a paragraph detailing their characteristics and significance in biological development.
Well written! Good try! Check the sample answer below.
Sample answer
In biology, 'blast' cells refer to immature, undifferentiated cells found at an early stage of development. These cells possess a high capacity for proliferation and are crucial for tissue formation and repair. For instance, erythroblasts are precursors to red blood cells, and myoblasts develop into muscle cells. Understanding blast cells is fundamental to comprehending how organisms grow and regenerate, and they are also significant in the study of certain diseases.
Describe a scenario where a 'blast' of air or water is used effectively or problematically in an industrial or natural context. Explain the cause and effect.
Well written! Good try! Check the sample answer below.
Sample answer
In an industrial context, a controlled blast of high-pressure air can be effectively used for cleaning intricate machinery, dislodging stubborn debris without causing damage. The force of the air streamlines the cleaning process, making it efficient and thorough. However, an uncontrolled blast of water, such as during a flash flood, can be highly problematic. The immense pressure and volume of water can cause significant erosion, destroy infrastructure, and endanger lives, demonstrating the destructive power of a natural 'blast'.
What is the primary purpose of the new materials described in the passage?
Read this passage:
Scientists have developed new materials designed to withstand the immense pressure of a blast. These innovative composites incorporate layers that can dissipate energy more effectively than traditional armor. The goal is to minimize structural damage and protect occupants in high-risk environments. Early tests show promising results, indicating a significant improvement in blast resistance.
What is the primary purpose of the new materials described in the passage?
The passage states that the materials are 'designed to withstand the immense pressure of a blast' and 'to minimize structural damage and protect occupants', directly indicating their protective purpose.
The passage states that the materials are 'designed to withstand the immense pressure of a blast' and 'to minimize structural damage and protect occupants', directly indicating their protective purpose.
According to the passage, what is a key characteristic of 'blast' cells in embryology?
Read this passage:
In the study of embryology, understanding the early stages of cell development is paramount. Undifferentiated cells, often referred to as 'blast' cells, are crucial during this period. Their ability to rapidly divide and specialize allows for the formation of complex tissues and organs. Disruption to these cells can have profound effects on an organism's development.
According to the passage, what is a key characteristic of 'blast' cells in embryology?
The passage explicitly states that 'Their ability to rapidly divide and specialize allows for the formation of complex tissues and organs,' highlighting this as a key characteristic.
The passage explicitly states that 'Their ability to rapidly divide and specialize allows for the formation of complex tissues and organs,' highlighting this as a key characteristic.
What caused the people in the room to shiver?
Read this passage:
The sudden blast of cold air from the air conditioner surprised everyone in the room. This quick change in temperature caused a few people to shiver, despite the warm weather outside. Such rapid shifts in environmental conditions can sometimes be uncomfortable, even if they are temporary.
What caused the people in the room to shiver?
The passage clearly states, 'The sudden blast of cold air from the air conditioner surprised everyone in the room. This quick change in temperature caused a few people to shiver,' directly linking the cold air to the shivering.
The passage clearly states, 'The sudden blast of cold air from the air conditioner surprised everyone in the room. This quick change in temperature caused a few people to shiver,' directly linking the cold air to the shivering.
The engineers observed the ___ effects of the experimental explosive on the reinforced concrete barrier.
In this context, 'blast' refers to the powerful and destructive impact of an explosion, which aligns with the observed effects on a barrier. The other options suggest less forceful or imperceptible impacts.
Biologists are studying the behavior of ___ cells in the early stages of embryonic development to understand differentiation.
In biology, 'blast' cells are undifferentiated cells at an early stage of development, which is crucial for understanding how cells specialize.
The sudden ___ of cold air from the opened freezer compartment caused a shiver.
A 'blast' of air describes a sudden, forceful stream, which accurately portrays the sensation of cold air rushing out of a freezer. The other options imply a much weaker or gentler movement.
A 'blast' in a technical report about demolitions would typically refer to the gentle displacement of material.
In demolition contexts, 'blast' refers to a forceful explosion, not a gentle displacement of material.
In immunology, 'lymphoblasts' are mature, fully differentiated immune cells.
'Lymphoblasts' are immature white blood cells (lymphocytes) that are still in the process of developing and differentiating, not mature and fully differentiated.
The phrase 'a blast of wind' implies a weak and barely noticeable breeze.
'A blast of wind' suggests a sudden, strong, and forceful gust, not a weak breeze.
Describe a scenario where a 'blast' of wind significantly impacted a natural landscape. Focus on the immediate effects and potential long-term changes.
Well written! Good try! Check the sample answer below.
Sample answer
A sudden, powerful blast of wind, a true gale, swept through the coastal region, causing immediate and dramatic changes to the landscape. Sand dunes, once stable, began to erode rapidly as the forceful air scoured their surfaces. Trees, particularly those exposed on the cliffs, were stripped of their leaves and branches, their forms permanently altered by the relentless assault. The long-term consequences could include significant shoreline retreat and a transformation of the local ecosystem as less resilient species are displaced.
In a technical report, explain the concept of a 'blast' in the context of early cellular development, specifically focusing on the properties of undifferentiated cells.
Well written! Good try! Check the sample answer below.
Sample answer
In developmental biology, the term 'blast' often refers to undifferentiated cells at an early stage of development, such as a blastocyst. These cells are typically pluripotent, meaning they possess the capacity to differentiate into various cell types that contribute to the formation of tissues and organs. Their rapid proliferation is crucial for early embryogenesis, preceding the intricate processes of morphogenesis and cell differentiation. Understanding the characteristics of these 'blast' cells is fundamental to comprehending the foundational stages of life.
Imagine you are an engineer designing a structure to withstand the impact of a 'blast' force. Detail the considerations and materials you would employ to ensure its integrity.
Well written! Good try! Check the sample answer below.
Sample answer
When designing a structure to withstand a blast force, resilience is paramount. My considerations would begin with the building's geometry, opting for a compact, rigid form to minimize surface area exposed to the dynamic load. Material selection would involve reinforced concrete with high tensile strength, and perhaps steel plating or composite materials known for their energy-absorbent properties. Blast mitigation techniques, such as stand-off distances and deflecting barriers, would also be integrated to dissipate the blast wave's energy. The structural elements would be designed to deform plastically without catastrophic failure, maintaining overall integrity.
What evidence suggests a 'blast' occurred at the archaeological site?
Read this passage:
The archaeological team discovered ancient pottery shards that exhibited unique firing patterns, suggesting a sophisticated understanding of kiln temperatures. However, a significant portion of the site showed signs of rapid destruction, possibly from a sudden blast, leading to fragmented artifacts and a disrupted stratigraphic layer. This event appears to have abruptly ended the settlement's occupation, preserving a snapshot of their daily lives under a layer of debris.
What evidence suggests a 'blast' occurred at the archaeological site?
The passage explicitly states that 'a significant portion of the site showed signs of rapid destruction, possibly from a sudden blast, leading to fragmented artifacts and a disrupted stratigraphic layer,' directly linking these observations to the blast.
The passage explicitly states that 'a significant portion of the site showed signs of rapid destruction, possibly from a sudden blast, leading to fragmented artifacts and a disrupted stratigraphic layer,' directly linking these observations to the blast.
What is the primary characteristic of a 'blast crisis' in leukemia?
Read this passage:
In the medical field, the term 'blast crisis' refers to an aggressive phase of certain leukemias, characterized by an abnormal increase in immature white blood cells (blasts) in the bone marrow and peripheral blood. This surge of undifferentiated cells impairs normal hematopoiesis, leading to severe symptoms and requiring urgent, intensive treatment strategies to control the rapid proliferation and prevent organ infiltration.
What is the primary characteristic of a 'blast crisis' in leukemia?
The passage defines 'blast crisis' as 'an abnormal increase in immature white blood cells (blasts) in the bone marrow and peripheral blood,' highlighting this as the primary characteristic.
The passage defines 'blast crisis' as 'an abnormal increase in immature white blood cells (blasts) in the bone marrow and peripheral blood,' highlighting this as the primary characteristic.
What is the main purpose of simulating high-pressure air 'blasts' in automotive safety tests?
Read this passage:
Engineers conducting safety tests on new automotive designs often simulate extreme conditions, including the impact of high-pressure air blasts. These tests evaluate the structural integrity of the vehicle's body and the effectiveness of its occupant protection systems. The data gathered from these simulations helps refine designs to minimize the risk of injury during accidents involving sudden, forceful impacts, whether from collisions or external pressure waves.
What is the main purpose of simulating high-pressure air 'blasts' in automotive safety tests?
The passage states that 'These tests evaluate the structural integrity of the vehicle's body and the effectiveness of its occupant protection systems,' clearly indicating the main purpose.
The passage states that 'These tests evaluate the structural integrity of the vehicle's body and the effectiveness of its occupant protection systems,' clearly indicating the main purpose.
/ 54 correct
Perfect score!
例句
The workers had to wear protective gear near the blast furnace to avoid the intense heat.
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这个词在其他语言中
更多Other词汇
abate
C1指强度或严重程度减轻。常用于描述自然现象、情感或某种干扰因素逐渐平息。
abcarndom
C1有意偏离固定的顺序或既定模式，转而采用随机或非线性的方法，常用于技术分析。
abcenthood
C1The state, condition, or period of being absent, particularly in a role where one's presence is expected or required. It often refers to a prolonged or systemic lack of participation in a social, parental, or professional capacity.
abcitless
C1指的是事物缺少了最关键的部分，导致计划或想法无法正常进行。
abcognacy
C1The state of being unaware or lacking knowledge about a specific subject, situation, or fact. It describes a condition of non-recognition or a gap in cognitive awareness, often used in technical or specialized academic contexts.
abdocion
C1形容背离中心轴的运动、力量或逻辑过程。常用于技术语境，描述肢体或物体向外偏离。
abdocly
C1Abdocly 形容那些被隐藏、嵌入或处于凹处，不容易被直接观察到的事物。
aberration
B2A departure from what is normal, usual, or expected, typically one that is unwelcome. It refers to a temporary change or a deviation from the standard path or rule.
abfacible
C1To systematically strip or remove the external surface or facade of a structure or material for analysis, restoration, or cleaning. It specifically refers to the technical act of uncovering underlying layers while preserving the integrity of the core material.
abfactency
C1指与事实或客观现实完全脱节的状态。通常用于描述那些逻辑自洽但与现实毫无关联的理论或论点。
