名詞 reaction:

1. a response that reveals a person's feelings or attitude
2. a bodily process occurring due to the effect of some foregoing stimulus or agent
   同義詞：response
3. (chemistry) a process in which one or more substances are changed into others
   同義詞：chemical reaction
4. an idea evoked by some experience
5. doing something in opposition to another way of doing it that you don't like
6. extreme conservatism in political or social matters
7. (mechanics) the equal and opposite force that is produced when any force is applied to a body

1. A reactor is a container for chemical reaction.
   反應器是進行化學反應的容器。
2. Running away is our instinctive reaction when we meet danger.
   遇到危險時，我們的本能反應就是跑開。
3. The contraction of muscle is a reaction of the body.
   肌肉的收縮是人體的一種反應。
4. The forces of reaction made reform difficult.
   反動勢力給改革造成了困難。
5. Her arrest produced an immediate reaction from the press.
   她被捕的事立刻在新聞界引起反應。
6. What was his reaction to the news?
   他對這消息的反應如何？
7. His reaction on this matter is unexpected.
   沒料到，他對這件事的反應是這樣的。

re.ac.tion

n.（名詞）

A response to a stimulus.
反應：對刺激的回應
The state resulting from such a response.
反應狀態(tài)：由于反應而產(chǎn)生的狀態(tài)
A reverse or opposing action.
反動：相反的，互逆的行動

A tendency to revert to a former state.
反動：希望回到過去狀態(tài)的趨勢
Opposition to progress or liberalism; extreme conservatism.
保守：對社會進步或自由主義的反對；極端保守主義
Chemistry A change or transformation in which a substance decomposes, combines with other substances, or interchanges constituents with other substances.
【化學】 反應：一種物質分解，同其它物質結合或與其它物質交換元素的變化或轉變
Physics A nuclear reaction.
【物理學】 核反應
Physics An equal and opposite force exerted by a body against a force acting upon it.
【物理學】 反作用力：物體對于加在其上的力作出的大小相同，方向相反的力量
The response of cells or tissues to an antigen, as in a test for immunization.
生理反應：細胞或組織對抗原的反應，用于免疫系統(tǒng)檢測等
Psychology A pattern of behavior constituting a mental disorder or personality type.
【心理學】 習慣性行為：一種固定的行動模式，能引起神經(jīng)失常或造成人格