1、cool常作为形容词是凉爽的、冷静的意思，比如，cool water凉水，cool weather冷天，a cool breeze凉爽的微风。
2、看下面例句，It was a lovely cool evening. 那是个凉爽的夜晚。It's a bit cool in here, isn't it? I think I'll close the window. 这儿有点凉，是不是？我想关上窗户。
3、想劝人保持冷静可以说，Keep cool! 保持冷静！ 夸赞或赞同别人是也常用cool，例如，You look pretty cool with that new haircut. 你新剪的发型真酷。
4、It's a cool movie. 那部电影真棒。 ‘Can you come at 10.30 tomorrow?’ ‘That's cool’. “你明天 10:30 能来吗？”“没问题。”
