to remove a part of something to make it smaller or shorter, using a sharp tool such as a knife

Remember to cut off the fat before you fry the steak. 煎牛排时记得先把肥肉去掉。

to stop providing something such as electricity, supplies, etc.

If this bill is not paid within five days, your gas supply will be cut off. 要是5日内不付清账单，将停止对你的煤气供应。

The aim was to cut off the enemy's escape route/supplies. 目的是阻断敌人的逃跑路线／物资供应。

to stop people from continuing a phone conversation by breaking the phone connection

We got cut off before she could give me directions. 她还没给我指示我们的电话就断掉了。

If someone serving drinks in a bar cuts you off, that person stops serving you alcoholic drinks because they think you have drunk too many.

I'm glad the bartender cut Tommy off - he's already had too much to drink. 我很高兴服务员不再卖酒给汤米——他已经喝多了。

to cause a person or place to become separate, or cause someone to be or feel alone

When his wife died, he cut himself off from other people. 妻子死后，他闭门谢客。

Many villages have been cut off by the heavy snow. 许多村庄由于这场大雪与外界隔绝了。