Pond scum
01
池塘浮渣, 人渣
someone who is considered to be of very low social status or morally reprehensible
Disapproving
Informal
Offensive
例子
That guy is such a pond scum; he took advantage of the situation to make a profit.
那个家伙真是个池塘浮渣；他利用这种情况来获利。
