1. The sign was intended to warn off trespassers.
该告示牌旨在警告入侵者不要擅闯。

2. She tried to warn him off the dangerous path.
她试图劝他不要走那条危险的小路。

A: Did you warn him off the property?
A：你有没有警告他离开这片房产？

B: Yes, I told him he wasn't welcome.
B：是的，我告诉他不受欢迎。

1) To warn someone to stay away from a person or a place.

2) To discourage someone from doing something by warning them.

1. 警告某人远离

e.g. The police warned off the crowd.
警察警告人群不要靠近。

verb phrase

1. To warn someone to stay away from a person or a place.