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B1 noun 9分钟阅读

収束

shuusoku
例句 収束 30秒了解
解析 収束 in your Level:
At the A1 level, '収束' (shūsoku) is too difficult. You should focus on simple words like 'owaru' (to end) or 'yamu' (to stop, for rain). However, if you see this word, think of it as 'things getting quiet' or 'the problem stopping.' Imagine a big group of people shouting, and then everyone becomes quiet. That is a very simple way to think about 'shūsoku.' You will not need to use this word in your own speaking yet, but you might see it on a poster about health or safety. Just remember: it means 'getting better' or 'settling down.' It is a formal word, so you will see it in newspapers or on the news more than in stories for children. If you can remember that 'shū' means 'gather' and 'soku' means 'bundle,' you can imagine someone gathering all the messy problems into a small bundle so they don't spread anymore. This is a good first step to understanding this complex Japanese word.
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At the A2 level, you might start hearing '収束' (shūsoku) on the news or in announcements. It is a 'suru' verb, which means you can say 'shūsoku suru' to mean 'to settle down.' For example, if there is a big sickness in the city, the news might say the sickness is 'shūsoku' (settling down). It is different from 'owaru' (to end) because 'shūsoku' is used for bigger, more serious things like diseases, big arguments, or bad weather. You should also know that there is another word that sounds exactly the same: 終息. At this level, don't worry too much about the difference, but try to recognize that the kanji 収 (shū) is the same one in 'shūnyū' (income/gathering money). It means bringing things together. So, 'shūsoku' is about bringing a messy situation together so it becomes small and quiet. If you are describing a situation that was very busy or scary but is now becoming normal again, this is the word you will see in formal writing.
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At the B1 level, you should be able to use '収束' (shūsoku) in formal writing and understand its specific nuances. It is a key word for discussing social issues and technical subjects. You should understand that it means 'containment' or 'stabilization.' For example, when discussing the economy, you might say 'infure ga shūsoku suru' (inflation settles down). In a social context, it refers to a situation that was spreading (like a rumor or a virus) being brought under control. You should also be aware of its mathematical meaning: 'convergence.' If you are studying science or math in Japanese, you will use 'shūsoku' to describe a sequence approaching a limit. This is the level where you must distinguish it from 'chinzeika' (calming down) and 'shūketsu' (ending). Remember that 'shūsoku' implies that the *trend* of expansion has stopped. It is a very common word in NHK news reports, and using it correctly in a business presentation will make you sound much more professional and advanced.
At the B2 level, you are expected to handle the subtle distinction between 収束 (containment/convergence) and 終息 (total eradication). This is a common point of confusion even for native speakers, but a B2 learner should be precise. 収束 is used when the peak of a crisis has passed and the situation is now manageable or following a specific trend toward a limit. You should be comfortable using phrases like 'shūsoku no kizashi' (signs of containment) and 'shūsoku ni mukau' (heading toward settlement). You should also understand its use in abstract logical contexts—how multiple opinions 'shūsoku' into one consensus. In your writing, use this word when discussing public policy, medical trends, or mathematical models. You should also recognize the causative form 'shūsoku saseru' (to bring under control) and the passive 'shūsoku sareru.' Your ability to use this word correctly in a debate about social stability or scientific data will demonstrate a strong grasp of formal Japanese vocabulary.
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At the C1 level, you should have a nuanced understanding of '収束' (shūsoku) across diverse domains including advanced mathematics, economics, and political discourse. You should be able to discuss the 'shūsoku-sei' (convergence property) of an algorithm or a sequence in a technical environment. In political contexts, you should understand how the word is used to describe the stabilization of international tensions or the resolution of complex legal disputes. You should also be sensitive to the rhetorical use of the word—for instance, how a politician might use 'shūsoku' to suggest a problem is handled even if it isn't fully 'shūketsu' (terminated). You should be able to use it in complex sentence structures, such as 'shūsoku wo miru' (to see a settlement/conclusion). At this level, you should also be familiar with related technical terms like 'shūsumi' (already settled/converged) in specific industry contexts. Your use of the word should reflect an understanding of its historical development and its role in modern Japanese administrative language.
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At the C2 level, your mastery of '収束' (shūsoku) should be indistinguishable from that of an educated native speaker. You should be able to appreciate the word's etymological roots and its philosophical implications—the idea of gathering chaos into a singular, bound order. You should be able to use it effortlessly in academic papers to describe the convergence of theories or the stabilization of chaotic systems in physics. You should also be able to critique the use of the word in public discourse, such as analyzing the government's choice between '収束' and '終息' in official reports to manage public perception. Furthermore, you should be familiar with its appearance in classical-style modern literature or high-level editorial writing where the choice of kanji provides a specific 'texture' to the narrative. Your ability to deploy this word in a wide variety of registers, from dry mathematical proofs to sophisticated socio-political commentary, will mark your ultimate proficiency in the Japanese language.
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例句

収束 30秒了解

  • Used for containing messy situations like viruses or scandals.
  • Means 'convergence' in math (approaching a specific limit).
  • Formal tone; often heard on news or in academic lectures.
  • Implies things are under control, but not necessarily 100% gone.

The Japanese word 収束 (shūsoku) is a sophisticated noun and suru-verb that primarily describes the process of a chaotic or spreading situation being brought under control, narrowing down, or heading toward a conclusion. While it is often translated as 'settling down' or 'convergence,' its usage spans across public health, social stability, and high-level mathematics. Understanding this word requires a grasp of its two kanji: 収 (shū), meaning 'to obtain' or 'to harvest' (implying bringing things in), and 束 (soku), meaning 'bundle' or 'tie up.' Together, they evoke the image of gathering scattered elements and binding them into a manageable, singular point.

Public Health & Social Issues
In the context of an epidemic (like COVID-19) or a riot, 収束 refers to the state where the spread is contained and the number of new cases or incidents is declining. It does not necessarily mean the problem is 100% gone, but rather that it is no longer expanding uncontrollably.
Mathematics & Logic
In calculus and logic, it refers to a sequence or series approaching a specific limit (convergence). If a series of numbers gets closer and closer to a single value, it is said to be 'shūsoku' (収束) to that value.
Business & Conflict
When a heated debate or a corporate scandal begins to quiet down because a resolution has been reached, we use this term to describe the stabilization of the situation.

感染拡大がようやく収束の兆しを見せ始めた。
(The spread of infection has finally begun to show signs of settling down.)

One of the most important things for learners to realize is that 収束 is a 'process-oriented' word. It highlights the transition from chaos to order. For instance, during the 2020 pandemic, Japanese news media used this word daily to discuss 'containment' strategies. It is distinct from its homophone 終息 (also pronounced shūsoku), which implies a 'complete end' or 'eradication.' If you are talking about a fire being brought under control but still smoldering, you use 収束. If the fire is completely out and the site is cleared, you use 終息.

この数列は一定の値に収束する。
(This sequence converges to a constant value.)

Culturally, the Japanese value 'wa' (harmony) and the restoration of order. Therefore, 収束 is a word of relief. When a social unrest or a 'flaming' incident (enjō) on social media begins to 収束, it implies that the collective energy is dissipating and the community is returning to its baseline state. It is a word that describes the 'quieting of the storm.'

不祥事案が収束に向かうよう、誠意を持って対応する。
(We will respond with sincerity so that the scandal moves toward a resolution.)

Using 収束 (shūsoku) correctly involves understanding its grammatical role as a noun that frequently pairs with the verb 'suru' (to do) or functions as the target of the particle 'ni' (to/toward). Because it describes a movement toward a state, you will often see it paired with verbs like 'mukau' (to head toward) or 'hakaru' (to aim for/plan).

As a Suru-Verb (収束する)
This is the most direct way to say something is settling down or converging. For example, 'Sōdō ga shūsoku suru' (The commotion settles down). In math, 'Kyokugen-chi ni shūsoku suru' (Converges to a limit value).
Heading Toward (収束に向かう)
This phrase is incredibly common in news reports. It suggests that while the issue isn't over yet, the trend is positive and things are becoming stable. 'Jitai wa shūsoku ni mukatte iru' (The situation is heading toward a resolution).
Aiming for Containment (収束を図る)
This is used when an active effort is being made to stop something from spreading. 'Seifu wa sōki shūsoku wo hakatte iru' (The government is aiming for early containment).

インフレがようやく収束し、経済が安定してきた。
(Inflation has finally settled down, and the economy has become stable.)

When using 収束 in a mathematical context, it is almost always followed by the particle 'ni' to indicate the point of convergence. For example, 'Zero ni shūsoku suru' (Converges to zero). This is a technical usage that you will find in textbooks and academic papers. In contrast, when talking about social phenomena, you might use 'no' to describe the 'signs' or 'state' of containment, such as 'shūsoku no kizashi' (signs of settling down).

混乱を収束させるためには、強力なリーダーシップが必要だ。
(In order to bring the chaos to an end, strong leadership is necessary.)

In formal writing, 収束 is often part of compound nouns. For instance, 'shūsoku sengen' (a declaration of containment). This was a major keyword during the Fukushima nuclear crisis and the COVID-19 pandemic, where officials would debate whether it was too early to issue a 'shūsoku sengen'. This demonstrates the word's weight in official and public discourse.

デモ活動は警察の介入によって収束した。
(The protest activities settled down due to police intervention.)

You are most likely to encounter 収束 (shūsoku) in formal, public-facing environments. It is not a word you would typically use while chatting with friends over coffee about a small argument, unless you are being intentionally ironic or dramatic. Instead, it belongs to the realms of news, academia, and high-level corporate communication.

The Evening News (NHK, etc.)
News anchors use this word to report on diseases, economic fluctuations, or international conflicts. If a war is entering a ceasefire phase, or if a flu outbreak is slowing down, the reporter will use 収束 to describe the trend.
University Lectures
In STEM (Science, Technology, Engineering, Mathematics) fields, professors use 収束 when discussing limits, algorithms, or physical phenomena where values stabilize. 'Kono kansū wa zero ni shūsoku shimasu' (This function converges to zero) is a standard phrase.
Corporate Crisis Management
In a business setting, if a company is facing a product recall or a data breach, the PR department will issue statements about how they are working to 'shūsoku' the situation to reassure shareholders.

「パンデミックの収束にはまだ時間がかかるでしょう」と専門家は述べた。
("It will likely take more time for the pandemic to settle down," the expert stated.)

Another interesting place you hear this word is in 'internet slang' or 'SNS culture,' but in a very specific way. When a popular YouTuber or celebrity gets into a 'flame war' (enjō), commenters will track the 'shūsoku' of the event. They might say 'Yatto shūsoku shita ne' (It finally died down, huh?) once the angry comments stop flooding in. This usage bridges the gap between formal news and modern digital life.

この議論は結局、一つの結論に収束した。
(This discussion eventually converged into a single conclusion.)

Finally, in the context of political science or sociology, you might hear about 'iken no shūsoku' (convergence of opinions). This happens when a divided group starts to find common ground. It’s a very positive, constructive use of the word that implies progress through negotiation and time.

The most frequent and confusing mistake learners (and even native speakers!) make with 収束 (shūsoku) is confusing it with its homophone 終息 (shūsoku). They sound identical but have different nuances and kanji. Let's break down the pitfalls.

収束 vs. 終息
  • 収束 (Containment): The situation is under control. The spread has stopped. The numbers are manageable. (e.g., COVID is still here, but hospitals are fine).
  • 終息 (Eradication): The situation is completely over. The problem is dead. (e.g., Smallpox is 'shūsoku' 終息).
Confusing with 'Owaru' (終わる)
Learners often use 収束 for simple endings like a movie or a book. This is incorrect. 収束 is for *chaotic processes* or *mathematical limits*. You wouldn't say 'The movie shūsoku-ed.' You say 'The movie owatta.'
Misusing the Particle 'ni'
In math, you MUST use 'ni' (converge *to*). In social contexts, you usually use 'ga' (the thing settles down). Mixing these up can make a sentence sound 'mathematical' when it should be 'social.'

❌ Incorrect: 宿題が収束した。
✅ Correct: 宿題が終わった。
(Homework is a task, not a chaotic process or a limit.)

Another mistake is using 収束 for positive growth. 収束 always implies a 'narrowing' or 'quieting.' If a business is expanding rapidly, you cannot use 収束. It is only for when that expansion slows down and stabilizes. It is a word of 'contraction' and 'focus,' not 'expansion.'

Finally, avoid using it for people's physical movements unless it's a large crowd. You wouldn't say 'The students shūsoku-ed into the classroom.' Use 'atsumaru' (gather) instead. 収束 is more abstract and refers to the *state* of the phenomenon rather than the physical act of walking.

While 収束 (shūsoku) is a powerful word, Japanese has several synonyms that might be more appropriate depending on the level of formality or the specific nature of the 'ending.' Understanding these nuances will make your Japanese sound more natural.

鎮静化 (Chinzeika)
Meaning 'calming down' or 'subsiding.' This is often used for riots, pain, or market volatility. While 収束 implies a logical or systematic containment, 鎮静化 focuses on the 'heat' or 'energy' of the situation dying out. Example: 'Arashi ga chinzeika shita' (The storm calmed down).
終結 (Shūketsu)
Meaning 'conclusion' or 'termination.' This is used for wars, negotiations, or legal cases. It implies a definitive stop, often through an agreement or a final event. Example: 'Sensō no shūketsu' (The end of the war).
収まる (Osamaru)
The native Japanese (kun-yomi) equivalent. It is much more versatile and used in daily life for things like the wind dying down, a cough stopping, or a stomach ache passing. Example: 'Kaze ga osamatta' (The wind died down).

Comparison:
1. 騒ぎが収束した (The uproar was contained/settled - formal).
2. 騒ぎが収まった (The uproar died down - natural/casual).
3. 騒ぎが鎮静化した (The uproar was suppressed/calmed - focus on the loss of energy).

In mathematical contexts, there is no real alternative to 収束. Words like 'chikazuku' (to approach) are used in basic explanations, but 収束 is the proper technical term. In business, you might use 'kaiketsu' (resolution), but that implies the problem was *solved*, whereas 収束 just means it stopped being a big mess.

发音指南

UK /ʃuːsɒkʊ/
US /ʃuːsoʊkuː/
Pitch accent is usually on the second syllable (Heiban/Type 0: shu-u-so-ku).
押韵词
Kūsoku (空束) Kyokusok
常见错误
  • Pronouncing 'shū' as a short 'shu' (like in 'shukudai').
  • Confusing the pitch accent with 'shūsoku' (終息), though they are often the same.
  • Forgetting the long vowel in 'shū'.
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按水平分级的例句

1

びょうきが しゅうそくしました。

The illness settled down.

Uses basic polite form (desu/masu).

2

かぜが しゅうそくしました。

The cold (virus) settled down.

Shūsoku is used for spreading things like colds.

3

さわぎが しゅうそくしました。

The noise/commotion settled down.

Shūsoku is used for noise or events.

4

ニュースで しゅうそくを ききました。

I heard about the containment on the news.

Shūsoku as a noun object.

5

はやく しゅうそくして ほしいです。

I want it to settle down quickly.

Te-form + hoshii (expressing a wish).

6

じけんが しゅうそくしました。

The incident settled down.

Simple past tense.

7

パニックが しゅうそくしました。

The panic settled down.

Katakana + shūsoku.

8

もうすぐ しゅうそくします。

It will settle down soon.

Future/present habitual tense.

1

インフルエンザが収束しました。

The flu (outbreak) has settled down.

Kanji introduced for shūsoku.

2

デモは静かに収束しました。

The protest settled down quietly.

Adverb 'shizuka ni' modifying the verb.

3

混乱は収束に向かっています。

The confusion is heading toward a resolution.

Ni mukatte iru (heading toward).

4

政府は収束を急いでいます。

The government is hurrying the containment.

Shūsoku as the direct object of isogu.

5

火災はようやく収束した。

The fire has finally been brought under control.

Plain past tense.

6

争いが収束してよかったです。

I'm glad the conflict settled down.

Te-form + yokatta (glad that...).

7

この問題はいつ収束しますか？

When will this problem settle down?

Question form.

8

収束のニュースを読みました。

I read the news about the containment.

Particle 'no' linking two nouns.

1

感染症の拡大が収束の兆しを見せている。

The spread of the infectious disease is showing signs of settling down.

Shūsoku no kizashi (signs of containment).

2

議論は一つの結論に収束した。

The discussion converged into one conclusion.

Ni shūsoku suru (converge to/into).

3

不祥事の収束を図るため、社長が謝罪した。

The president apologized to try and settle the scandal.

Shūsoku wo hakaru (to plan/aim for containment).

4

この数列は、nが無限大になるときに0に収束する。

This sequence converges to 0 as n goes to infinity.

Technical mathematical usage.

5

パニックが収束するまで、自宅で待機してください。

Please wait at home until the panic settles down.

Made (until) + shūsoku suru.

6

経済危機が収束し、株価が回復し始めた。

The economic crisis settled down, and stock prices began to recover.

Te-form used for sequence of events.

7

混乱を収束させるには、正確な情報が必要だ。

To bring the chaos under control, accurate information is necessary.

Causative form 'shūsoku saseru'.

8

事態の収束には、まだかなりの時間を要するだろう。

It will likely take a considerable amount of time for the situation to settle down.

Formal expression 'jikan wo yōsuru' (requires time).

1

今回の騒動は、法的な措置によって収束へと向かった。

The current uproar headed toward a settlement through legal measures.

Eto mukatta (headed toward - more formal than 'ni').

2

諸説紛々としていた議論が、ようやく収束を見た。

The discussion, which had been divided into various theories, finally saw a resolution.

Shūsoku wo miru (to see/reach a settlement).

3

政府は感染拡大の収束宣言を出すタイミングを慎重に検討している。

The government is carefully considering the timing for issuing a declaration of containment.

Shūsoku sengen (declaration of containment).

4

アルゴリズムが特定の解に収束しない場合、エラーが発生する。

If the algorithm does not converge to a specific solution, an error occurs.

Conditional 'ba' with negative form.

5

ネット上の炎上が収束するには、数週間かかるのが一般的だ。

It generally takes several weeks for an online 'flaming' incident to die down.

Noun + no + noun structure (Netto-jō no enjō).

6

暴動は軍の介入により、一夜にして収束した。

The riot was brought under control overnight due to military intervention.

Niyori (due to/by means of).

7

市場の混乱を収束させるべく、中央銀行が介入した。

The central bank intervened in order to settle the market turmoil.

Beku (in order to - literary/formal).

8

各国の利害関係が複雑に絡み合い、事態の収束は困難を極めている。

Interests of various countries are complexly intertwined, making a resolution extremely difficult.

Konnan wo kiwamete iru (extremely difficult).

1

その物理モデルは、エネルギーの最小値において収束する特性を持つ。

That physical model has the property of converging at the minimum energy value.

Technical scientific terminology.

2

紛争の収束に向けた多国間協議が、水面下で進められている。

Multilateral talks aimed at settling the conflict are proceeding behind the scenes.

Suimenka (behind the scenes/under the water).

3

情報の氾濫を収束させ、真実を明らかにすることが急務である。

It is an urgent task to contain the flood of information and reveal the truth.

Kyūmu (urgent task).

4

彼の理論は、最終的に量子力学の基本原理へと収束していく。

His theory eventually converges into the basic principles of quantum mechanics.

Te-iku (progressive change toward the future).

5

一連の騒動が収束した今、我々は再発防止策を講じるべきだ。

Now that the series of uproars has settled, we should take measures to prevent a recurrence.

Shūsoku shita ima (Now that... has settled).

6

解析学において、級数の収束条件を求めることは極めて重要である。

In mathematical analysis, finding the convergence conditions of a series is extremely important.

Shūsoku jōken (convergence conditions).

7

世論が特定の方向に収束していく過程を、メディアが加速させた。

The media accelerated the process in which public opinion converged in a specific direction.

Katei (process).

8

パンデミックの収束と終息は、公衆衛生上の定義において明確に区別される。

The containment and eradication of a pandemic are clearly distinguished in public health definitions.

Meikaku ni kubetsu sareru (clearly distinguished).

1

カオス理論におけるアトラクターは、系の状態が収束する先の集合を指す。

An attractor in chaos theory refers to the set toward which the state of a system converges.

Highly technical scientific definition.

2

長年の歴史的対立が、一通の親書によって収束へと大きく舵を切った。

The long-standing historical conflict took a major turn toward resolution due to a single personal letter.

Kaji wo kiru (to steer/take a turn - metaphorical).

3

言語の進化において、多様な方言が標準語へと収束する現象が見られる。

In the evolution of language, a phenomenon is observed where diverse dialects converge into a standard language.

Gengo no shinka (language evolution).

4

不条理な現実に抗う個人の意思も、やがては死という絶対的な虚無に収束する。

Even the individual's will to resist an absurd reality eventually converges into the absolute void of death.

Philosophical/literary usage.

5

そのアルゴリズムの収束速度は、計算資源の制約下で最適化されている。

The convergence speed of that algorithm is optimized under the constraints of computational resources.

Shūsoku sokudo (convergence speed).

6

権力闘争が収束を見た後、国には束の間の静寂が訪れた。

After the power struggle saw a resolution, a brief silence visited the country.

Tsukanoma no seijaku (brief silence).

7

情報の断片がジグソーパズルのように組み合わさり、一つの真実へと収束した。

Fragments of information combined like a jigsaw puzzle and converged into a single truth.

Metaphorical usage.

8

収束を急ぐあまり、根本的な原因の究明が疎かになってはならない。

In the rush to settle things, the investigation into the root cause must not be neglected.

Amari (too much... that...).

反义词

拡散 発散

常见搭配

収束に向かう
収束を図る
収束の兆し
収束させる
値に収束する
収束宣言
収束速度
感染収束
事態の収束
収束を見る

常用短语

早期収束

— Early containment or quick resolution of a problem.

早期収束を祈っています。

収束条件

— The conditions required for something to converge or settle.

収束条件を確認してください。

収束半径

— Radius of convergence (mathematical term).

収束半径を求める。

一端の収束

— A temporary or partial settlement of a situation.

騒動は一端の収束を見せた。

収束の目処

— A prospect or goal for when something will settle down.

収束の目処が立たない。

収束のプロセス

— The process of settling down.

収束のプロセスを分析する。

議論の収束

— The narrowing down of a discussion to a conclusion.

議論の収束に時間がかかる。

不祥事の収束

— The settling of a scandal.

不祥事の収束に全力を挙げる。

収束を祈る

— To pray for things to settle down.

一刻も早い収束を祈ります。

収束の段階

— The stage of containment.

現在は収束の段階にある。

习语与表达

"収束を見る"

— To reach a conclusion or to be settled. Used for long processes.

紛争はようやく収束を見た。

Formal
"収束に漕ぎ着ける"

— To manage to bring something to a settlement after much effort.

なんとか収束に漕ぎ着けた。

Neutral
"矛を収める"

— Literally 'to put away the spear'; to stop fighting (related concept).

彼らは矛を収めて収束した。

Idiomatic
"幕を引く"

— To bring down the curtain (to end something).

騒動に幕を引いて収束させた。

Idiomatic
"火を消す"

— To put out the fire (to stop a scandal or problem).

早く火を消して収束させよう。

Informal
"一点に収束する"

— To converge into a single point (often used for ideas).

皆の想いが一点に収束した。

Literary
"嵐が去る"

— The storm passes (things settle down).

嵐が去り、事態は収束した。

Informal
"波風が収まる"

— The waves and wind die down (conflict ends).

ようやく波風が収まって収束した。

Neutral
"収束の緒"

— The beginning of a settlement (the first clue/sign).

収束の緒を掴む。

Formal
"収束の域"

— The level or range of convergence.

それは収束の域に達している。

Academic
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