泼冷水
泼冷水 - discourage or deter someone from doing something

- He wasn't discouraged when they threw cold water on his ideas.
- We must not pour cold water on their enthusiasm.
- I don't want to throw cold water on you.
*本篇文章来自中国日报网
泼冷水
泼冷水 - discourage or deter someone from doing something