| 单词 | scum |
| 例句 | scum noun 1.•the water was covered with a thick green scum:film, layer, covering, froth | filth, dross, dirt. 2.informal •drug dealers are scum:despicable people, the lowest of the low, the dregs of society, vermin, riffraff, lowlifes | informal the scum of the earth, dirt. |
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