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| NOUN |
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| /skʌm/ |
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| 1 | a layer of a dirty or unpleasant substance that forms on the surface of a liquid 浮渣；浮垢 | A thick layer of black scum lay on the canal water. 运河水面上有一层厚厚的黑色浮渣。 | |
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| 2 | offensive an insulting word for someone you think is very unpleasant 人渣；混蛋 | The people who do these dreadful things are scum. 做这些可怕之事的人真是混蛋。 | |
| PHRASE |
| - | (the) scum of the earth offensive
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| an insulting expression for people you think are very unpleasant |
| 混蛋 |
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