用nip it in the bud表达“防患于未然”

短语to nip it in the bud 意思是防患于未然或消灭于萌芽状态。

• If he doesn‘t nip it in the bud, then the problem could soon get much worse.
• She thought it was a very dangerous idea and should be nipped in the bud immediately.

值得注意的是，另一个短语to nip out for something，意思是快去快回。

• Could you nip out to the shop and get me some milk, please?