vt.1. 警告；劝…使小心2. 告诫The dean cautioned him against being late.系主任告诫他不要迟到。
The veteran worker cautioned me not to inspect the tool machine without first truning off power.老工人告诫我不要在关断电源前去检查机床。
The policeman cautioned the prisoners not to play any tricks.'警察正式告诫罪犯不要耍花招。