讲解文本：

throw cold water 泼冷水，打击信心

Everybody thought my idea was great, but the boss threw cold water on it.

大家都认为我的主意很好，就是我们的老板给我泼冷水。

You should not throw cold water on him. He is already losing heart.

你不该对他泼冷水，他已经在丧失信心了。