don't judge a book by its cover (dont jiaji a buk bai its kover)

Idiom Proverb

含义

you shouldn't form an opinion on someone or something based purely on what you see on the outside

你不应该仅凭外表就对某人或某事做出判断

例句

"She may look serious, but don't judge a book by its cover."

"她看起来很严肃,但不要以貌取人。"