black sheep：敗家子；害群之馬；黑羊。
you are a bit of a black sheep.
你有點像個敗家子。
He was a black sheep and was driven
out of the school.
他是匹害群之馬，被開除了校籍。
You always have been the black sheep
of the Chinese nation
你一直都是中華民族的敗類。
Mike is a Black sheep, always Bringing
trouble to our firm.
邁克經常在我們公司吵鬧，他是個害群之馬。