black sheep
US /blæk ʃiːp/
UK /blæk ʃiːp/

1.
害群之马, 败家子
a member of a family or group who is regarded as a disgrace to them
:
•
He was always considered the black sheep of the family because of his unconventional lifestyle.
由于他非传统的生活方式,他一直被认为是家族中的害群之马。
•
Every organization has its black sheep, but we try to support everyone.
每个组织都有自己的害群之马,但我们努力支持每一个人。