keep cool

汉语翻译

例句：

1. John couldn't keep cool when he met his rival.
   约翰见到他的对手就不能冷静下来。
2. Keep cool!
   保持冷静！
3. The best thing is to keep cool.
   最好保持冷静。
4. Even when you argue, you should try to keep cool.
   即使在争辩时，你也要尽力保持冷静。