Ultraviolet rays are invisible solar radiation used in health, safety, and hygiene contexts.
واژه در 30 ثانیه
- Invisible electromagnetic radiation from the sun.
- Commonly used in weather, skincare, and sterilization contexts.
- Essential for Vitamin D but harmful in high doses.
Overview
- 1概述：紫外线（Ultraviolet，简称UV）是太阳光中肉眼不可见的一部分。虽然我们看不见它，但它对地球上的生命有着深远的影响。根据波长的不同，它通常被分为UVA、UVB和UVC三类，其中UVC大多被地球大气层吸收。2) 使用模式：在汉语中，“紫外线”通常作为主语或宾语出现。它经常与描述强度的形容词（如“强烈”、“弱”）连用，或者与防护类的动词（如“防”、“阻挡”、“屏蔽”）搭配。3) 常见语境：在天气预报中，播报员会提到“紫外线指数”以提醒市民注意防晒；在美容护肤领域，人们讨论如何通过防晒霜来抵御紫外线对皮肤的伤害；在卫生领域，紫外线灯常用于病房或实验室的空气消毒。4) 相似词比较：紫外线常与“红外线”一起被提及。红外线（Infrared）主要产生热效应，而紫外线则更多地引起化学反应或生物效应（如杀菌或使皮肤变黑）。与泛指的“阳光”相比，“紫外线”是一个更具科学性和针对性的术语，专门指代光线中具有高能量的那一部分。
مثالها
夏天中午的紫外线最强。
everydaySummer noon has the strongest UV rays.
这种玻璃可以阻挡99%的紫外线。
formalThis glass can block 99% of ultraviolet rays.
别在太阳下晒太久，紫外线太毒了。
informalDon't stay in the sun too long, the UV rays are too harsh.
紫外线辐射强度的增加与臭氧层变薄有关。
academicThe increase in UV radiation intensity is related to ozone depletion.
ترکیبهای رایج
عبارات رایج
强烈的紫外线
Strong UV rays
吸收紫外线
To absorb UV rays
紫外线过敏
UV allergy / Sun allergy
اغلب اشتباه گرفته میشود با
Infrared (红外线) is associated with thermal heat, while ultraviolet (紫外线) is associated with biological effects like tanning or sterilization.
Radiation (辐射) is a broad general term; UV is one specific type of non-ionizing radiation.
الگوهای دستوری
How to Use It
نکات کاربردی
The word '紫外线' is a neutral, scientific term. It is used consistently across all levels of formality. In daily life, it is almost exclusively associated with skincare and weather safety.
اشتباهات رایج
English learners might forget that '紫外线' is a noun in Chinese. While in English 'ultraviolet' can be an adjective (UV light), in Chinese you usually say '紫外线' (the rays themselves) or '紫外线灯' (UV lamp).
Tips
Check the UV Index Daily
Always check the UV index on your weather app to decide if you need extra sun protection.
Avoid Direct Eye Contact with UV Lamps
Never look directly at UV sterilization lamps as they can cause severe temporary or permanent eye damage.
UV Protection Culture in East Asia
In China, it is very common to see people using UV-rated umbrellas or wearing full-face masks to prevent skin damage.
ریشه کلمه
This is a loan translation (calque) from the English 'ultraviolet'. 'Ultra-' was translated as '外' (beyond/outside) and 'violet' as '紫' (purple).
بافت فرهنگی
In China, maintaining pale skin is a traditional beauty standard. Consequently, products labeled '防紫外线' (Anti-UV) are extremely popular, and people often use umbrellas specifically designed to block UV rays.
راهنمای حفظ
'紫' (zǐ) means purple, and '外' (wài) means outside. Think of UV as the light that exists just 'outside' or 'beyond' the purple end of the visible rainbow.
سوالات متداول
4 سوال强烈的紫外线会导致皮肤晒黑、晒伤，长期照射还会加速皮肤老化，甚至增加患皮肤癌的风险。
会有。虽然云层能阻挡部分紫外线，但仍有相当比例的紫外线能穿透云层到达地面，因此阴天也需要注意防晒。
适量的紫外线照射可以帮助人体合成维生素D，促进钙的吸收，对骨骼健康非常有益。
这是一种利用特定波长的紫外线破坏细菌和病毒DNA的方法，常用于医院、实验室和饮用水处理。
خودت رو بسنج
夏天的___非常强烈，出门记得涂防晒霜。
在防晒的语境下，通常指的是防止紫外线对皮肤的伤害。
哪种物品通常用来阻挡紫外线？
遮阳伞的设计初衷就是为了阻挡阳光中的紫外线。
(1) 医院 (2) 用 (3) 经常 (4) 紫外线 (5) 消毒
正确的语序是：医院经常用紫外线消毒。
امتیاز: /3
Summary
Ultraviolet rays are invisible solar radiation used in health, safety, and hygiene contexts.
- Invisible electromagnetic radiation from the sun.
- Commonly used in weather, skincare, and sterilization contexts.
- Essential for Vitamin D but harmful in high doses.
Check the UV Index Daily
Always check the UV index on your weather app to decide if you need extra sun protection.
Avoid Direct Eye Contact with UV Lamps
Never look directly at UV sterilization lamps as they can cause severe temporary or permanent eye damage.
UV Protection Culture in East Asia
In China, it is very common to see people using UV-rated umbrellas or wearing full-face masks to prevent skin damage.
مثالها
4 از 4夏天中午的紫外线最强。
Summer noon has the strongest UV rays.
这种玻璃可以阻挡99%的紫外线。
This glass can block 99% of ultraviolet rays.
别在太阳下晒太久，紫外线太毒了。
Don't stay in the sun too long, the UV rays are too harsh.
紫外线辐射强度的增加与臭氧层变薄有关。
The increase in UV radiation intensity is related to ozone depletion.
