v. show a response or a reaction to something
v. act against or in opposition to
v. undergo a chemical reaction; react with another substance under certain conditions
vi. 起反应, 起作用, 反攻
[医] 应答, 发生反应
1. I always try to react calmly in difficult situations.
我总是尽量在困难情况下冷静反应。
2. How did she react to the news of the promotion?
她对晋升的消息是如何反应的？
3. It's important to react quickly in an emergency.
在紧急情况下快速反应是很重要的。