n.反应；生理反应；反应能力；复旧；反动；化学反应

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。