音标：[ri'ækʃәn] ；柯林斯词典等级：4 级；牛津三千核心词汇；

n. 反应, 反作用, 反动
[医] 反应

n. an idea evoked by some experience
n. a bodily process occurring due to the effect of some antecedent stimulus or agent
n. (mechanics) the equal and opposite force that is produced when any force is applied to a body
n. a response that reveals a person's feelings or attitude

词型变化：名词复数形式 : reactions
考试类型：[四级/六级]

词性分布：

名词100%

reaction的用法和样例：

例句

用作名词(n.)

Her arrest produced an immediate reaction from the press.她被捕的事立刻在新闻界引起反应。
I had a bad reaction after my typhoid injection.我注射了伤寒针剂后产生了不良反应。
His reaction of swiftness surprised us.他快速的反应能力让我们吃了一惊。
After all the excitement there was an inevitable reaction.热闹一番过后,生活沉闷如故。
The forces of reaction made reform difficult.反动势力给改革造成了困难。
This chemical reaction generates a lot of heat.这个化学反应产生很多热量。

常见句型

用作名词(n.)

Their reaction to the joke is to laugh.他们对这个笑话的反应是笑。
Action and reaction are equal.作用力与反作用力是相等的。
The popularity of these old-fashioned views reflects a reaction against the permissiveness of the 1960s.这种旧式观念的流行是反对60年代性开放的一种反应。
The forces of reaction were defeated.反动军队被打败了。

词汇搭配

用作名词 (n.)

动词+～

cause〔evoke〕 reaction引起反应
test the reaction检验反应

形容词+～

strong reaction强烈的反响

名词+～

patient's reactions病人的反应

～+介词

reaction from来自…的反应
reaction of…的反应
reaction to对…的反应

经典引文

The reaction of the sides of the vessel against the fluid.
出自：S. Vince

【近义词】

【反义词】

action行为

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