throw a damp over; throw a wet blanket on; throw cold water on

1. 你如果想去德國過夏天，就別讓你家里的人對你這個打算潑冷水。
   If you want to go to Germany for the summer, don't let your family pour cold water on the idea.
2. 不要對他們的熱情潑冷水。
   Don't chill their enthusiasm.
3. 父母親給我們去山里野營的計劃潑冷水，他們認為不那樣做太危險。
   Our parents threw cold water on our plan to camp in the mountains because they thought it was dangerous.

冷水的英語翻譯：