react/rɪ'ækt/

v. behave in a particular way because of sth that has happened

v. [I] 作出反应，回应：[react to sth] How did he react to the news? 他听了消息后反应如何？

◇[react by doing sth] Some parents react by hitting their children when they don't behave themselves. 当孩子的行为不规矩时，有些父母的反应就是打他们一顿。

构词re- + act