to intentionally copy another person's characteristics, such as their behaviour, speech, appearance, or expressions, especially to make people laugh

She's the woman who impersonates all the celebrities on TV. 她是在电视中扮演各种名人的那个人。

to attempt to deceive someone by pretending that you are another person

He was fined for impersonating a police officer. 他因假冒警察而被罚款。