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BNC: 1269 COCA: 1409
reaction
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noun /riˈækʃ(ə)n/
singularreaction
pluralreactions
  1. 1
    [C] the way that you feel or behave as a result of something that happens 反应

    My mother's initial reaction was quite unexpected. 我母亲最初的反应是感到很意外。

     Synonyms and related words
    Reactions and ways of responding: reaction, response, reply...
    1. a.
      [usually singular] a sudden feeling of being tired, upset etc, for example after an unpleasant or exciting experience （不愉快、兴奋等引起的）反应（如疲倦或沮丧等）

      The reaction of any individual trauma victim is difficult to predict. 很难预测每个人对各自所遭受的创伤有何种反应。

      reaction to :

      Shock is a natural reaction to such bad news. 感到震惊是听到这些坏消息后的自然反应。

       Synonyms and related words
      Reactions and ways of responding: reaction, response, reply...
    See also knee-jerk
    Collocates: reaction
    Adjectives frequently used with reaction
    ▪  adverse, emotional, gut, immediate, initial, instinctive, knee-jerk, natural, violent
  2. 2
    [C] a bad effect on your body caused by food, medicine, or another substance （由食物或药物引起的）不良反应
    reaction to :

    Some people's skin has an allergic reaction to certain types of fabric. 有些人的皮肤对某些纺织品有过敏反应。

    have/suffer a reaction :

    He suffered a violent reaction to the medicine. 他对这种药物有强烈的不良反应。

     Synonyms and related words
    Allergies and allergy: allergen, allergic, allergy...
    Collocates: reaction
    Verbs frequently used with reaction as the object
    ▪  cause, produce, provoke, trigger
  3. 3

    reactions

    [plural] your ability to think and act quickly in a difficult or dangerous situation 反应能力；反应灵敏度

    A tragedy was only prevented by the driver's quick reactions. 司机反应迅速从而避免了一场悲剧的发生。

     Synonyms and related words
    Intelligence, intuition and ability to understand: intelligence, intuition, intellect...
  4. 4
    [C] chemistry a process in which a chemical change happens 化学反应

    Temperature can affect the rate of a chemical reaction. 温度可以影响化学反应的速度。

    reaction between :

    We are studying reactions between a number of metals and acids. 我们正在研究一些金属和酸之间的化学反应。

     Synonyms and related words
    Chemical reactions and processes: action, adsorb, aerate...
    1. a.
      [C/U] physics a physical force that is caused by an opposite physical force, usually producing a form of energy 反作用力

      a nuclear reaction 核反应

      Newton teaches that action and reaction are equal and opposite. 牛顿认为作用力与反作用力大小相等，方向相反。

       Synonyms and related words
      Physical forces and processes: absorbance, air resistance, amplitude...
    See also chain reaction
  5. 5
    [singular] an attitude of wanting to do things in a different way from the way that they were done in the past 反对；反抗；对抗
    reaction against :

    The reaction against traditional styles continued for another 50 years. 与传统风格的对抗又持续了50年。

     Synonyms and related words
    A change of opinion: about-turn, climb-down, shift...
  6. 6
    [U] formal strong opposition to any social or political change 反动；守旧；保守

    the forces of reaction 反动势力

     Synonyms and related words
    Stubbornness and narrow-mindedness: stubborn streak, intransigence, intolerance...
BNC: 1269 COCA: 1409
reaction

noun¹

 1response回應ADJECTIVE | VERB + REACTION | PREPOSITION ADJECTIVE➤extreme, strong, violent極端的／強烈的／激烈的反應▸➤favourable/favorable, positive有利的／肯定的反應▸➤adverse, hostile, negative負面的回應；敵對的反應；消極的反應▸➤mixed多種不同的反應◇The speech got a mixed reaction.人們對該演講褒貶不一。➤angry憤怒的回應▸➤first, immediate, initial第一／即刻的／最初的反應▸➤delayed延遲的反應◇Her outburst was a delayed reaction to an unpleasant letter she'd received that morning.她大發雷霆，是那天早上收到一封令她不快的信件的延時反應 。➤chain連鎖反應◇The change of plan set off a chain reaction of confusion.計劃的變更引起了一連串的混亂。➤common, general, public共同的／普遍的／公眾的反應▸➤natural, normal, understandable自然的／正常的／可以理解的反應◇His reaction is completely understandable.他的反應完全可以理解。➤automatic, gut, instinctive, knee-jerk, spontaneous自動的反應；本能的反應；下意識的反應◇The incident calls for a measured response, avoiding knee-jerk reactions.這一事件需要慎重對待，不要不動腦子就回應。➤nervous緊張的反應▸➤emotional, visceral情緒上的／出自內心的反應▸➤critical評論的反應◇The critical reaction to his first novel has been positive.評論界對他的第一部小說反響不錯。VERB + REACTION➤get, have, meet with得到回應；有反應◇The play met with a mixed reaction from the critics.評論家對這齣戲褒貶不一。➤experience經歷反應◇I believe she is experiencing a post-traumatic stress reaction.我想她正在經受創傷後的應激反應。➤bring, cause, elicit, induce, produce, provoke, set off, spark, spark off, trigger, trigger off帶來反應；產生反應；引發反應◇She was surprised at the reaction brought by the mention of his name.提到他的名字後產生的反應使她很驚訝。➤gauge, judge對反應作出評估／判斷◇He eyed her cautiously, trying to gauge her reaction.他謹慎地打量着她，估摸着她的反應。➤judge by, judge from（從⋯）判斷反應◇Judging by her reaction, she liked the present.從她的反應來看，她是喜歡這件禮物的。PREPOSITION➤in reaction to作為對⋯的反應◇There's been a drop in ticket sales in reaction to the review.評論發表後，票房下降了。➤reaction against反抗◇Her rebellious attitude is just a reaction against her strict upbringing.她叛逆的態度正是對自己嚴格家教的一種反抗。➤reaction to對⋯的反應◇the public reaction to the news公眾對這一新聞的反應
reaction

noun²

 2(usually reactions) ability to react quickly快速反應的能力ADJECTIVE | VERB + REACTION | REACTION + NOUN ADJECTIVE➤fast, good, lightning, quick快速的／良好的／閃電般的／迅速的反應能力◇Keenan showed lightning reactions.基南顯示出了閃電般的反應能力。➤slow緩慢的反應VERB + REACTION➤have有反應能力◇She has very quick reactions.她反應很快。➤speed up加速反應▸➤slow down放慢反應◇Alcohol has the effect of slowing down your reactions.酒精會使人反應遲鈍。REACTION + NOUN➤time反應時間◇Your reaction time increases when you are tired.疲勞會使你反應變慢。
reaction

noun³

 3chemical reaction化學反應ADJECTIVE | VERB + REACTION | REACTION + VERB | PREPOSITION ADJECTIVE➤chain連鎖反應▸➤chemical, nuclear, thermonuclear, etc.化學反應、核反應、熱核反應等➤fission, fusion裂變／聚變反應➤reversible可逆反應VERB + REACTION➤cause, initiate, produce, start, trigger引起／啟動／產生／開始／引發化學反應➤catalyse/catalyze (science科學) 催化反應▸➤stop停止化學反應▸➤slow down, speed up減慢／加速化學反應REACTION + VERB➤occur, take place化學反應出現／發生PREPOSITION➤during a/the reaction, in a/the reaction在化學反應過程中◇the energy given out during the reaction化學反應中釋放的能量➤reaction between⋯之間的化學反應◇I am studying the reactions between certain gases.我正在研究某些氣體之間的化學反應。➤reaction with和⋯的化學反應◇the fuel's chemical reaction with the surrounding water燃料和周圍的水之間的化學反應
reaction

noun⁴

 4physical reaction生理反應ADJECTIVE | VERB + REACTION | PREPOSITION ADJECTIVE➤adverse, bad, severe不良反應；嚴重的不良反應▸➤mild, slight輕微反應▸➤delayed遲發型反應◇a delayed reaction to the drugs對藥物的延遲的不良反應➤allergic變態反應➤inflammatory炎性反應VERB + REACTION➤experience, have, suffer經歷不良反應；有不良反應；過敏◇She had a very bad allergic reaction to the peanuts.她對花生嚴重過敏。➤cause, induce, produce引起過敏；產生不良反應PREPOSITION➤reaction to對⋯的不良反應◇A small minority of patients suffer an adverse reaction to the treatment.少數病人對該療法有不良反應。
BNC: 1269 COCA: 1409
reaction noun
⇨ response

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