reaction
/rɪˈækʃən/noun
1- an action performed or a feeling experienced in response to a situation or event反应：
Carrie's immediate reaction was one of relief.
嘉丽的第一反应是感到宽慰。
1.1
reactions
a person's ability to respond physically and mentally to external stimuli（人对外部刺激的）反应力：a skilled driver with quick reactions.
反应极快的熟练驾驶员。
1.2
- an adverse physiological response to a substance that has been breathed in, ingested, or touched（对吸入、咽下或触及的东西的）不良生理反应：
such allergic reactions as hay fever and asthma.
干草热和哮喘等过敏反应。
1.3
- a chemical process in which two or more substances act mutually on each other and are changed into different substances, or one substance changes into two or more other substances化学反应。
1.4
- Physics an analogous transformation of atomic nuclei or other particles【物理】反应。
1.5
- a mode of thinking or behaving that is deliberately different from previous modes of thought and behaviour反抗; 对抗：
the work of these painters was a reaction against fauvism.
这些画家的作品是对野兽派的对抗。
1.6
- mass noun opposition to political or social progress or reform反动, 极端保守主义：
the institution is under threat from the forces of reaction.
这一机构受到反动势力的威胁。
1.7
- mass noun Physics repulsion or resistance exerted in opposition to the impact or pressure of another body; a force equal and opposite to the force giving rise to it【物理】反作用（力）, 反力, 阻力。
派生词
reactionist
noun & adjective词源