black sheep
败家子或败类
口语·形容家族或群体中的异类
英文释义
someone who is seen as the disgrace or outcast of a group or family
例句
He's the black sheep of the family because he dropped out of school to become an artist.
典故来源
源自牧羊业，黑羊的羊毛价值较低，常被视为不受欢迎的异类，引申为家族或群体中的败类或耻辱。