react

1. V-I When you react to something that has happened to you, you behave in a particular way because of it. 作出反應

They reacted violently to the news. 他們對這條新聞反應強烈。

2. V-I If you react against someone's way of behaving, you deliberately behave in a different way because you do not like the way they behave. 反抗

My father never saved money and perhaps I reacted against that. 我父親從不儹錢，也許我反對這種做法。

3. V-I If you react to a substance such as a drug, or to something you have touched, you are affected unpleasantly or made ill by it. (對葯物或其他所碰觸的東西等) 起不良反應

Someone allergic to milk is likely to react to cheese. 對牛嬭過敏的人可能會對嬭酪也有不良反應。

4. V-RECIP When one chemical substance reacts with another, or when two chemical substances react, they combine chemically to form another substance. 起化學反應

Calcium reacts with water but less violently than sodium and potassium do. 鈣能與水産生化學反應但不如鈉以及鉀那麼劇烈。