scum

美 [skʌm]
英 [skʌm]
  • n.浮渣;败类;浮沫;浮垢
  • v.去除(浮渣);形成泡沫;生浮皮 变得满是浮渣
  • 网络人渣;渣滓;水垢
过去式:scummed  
scum
n.
1.
[u][sing]
浮沫;浮垢;浮渣a layer of bubbles or an unpleasant substance that forms on the surface of a liquid
Skim off any scum.
撇净浮沫。
stinking water covered by a thick green scum
盖着厚厚一层绿色浮垢的臭水
2.
[u][pl]
(informal)
(骂人的话)渣滓,败类an insulting word for people that you strongly disapprove of
Don't waste your sympathy on scum like that.
对这样的渣滓你没必要同情。
Drug dealers are the scum of the earth(= the worst people there are) .
毒品贩子是社会渣滓。

例句

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