n.浮渣；泡沫；糟粕；vi.产生泡沫；被浮渣覆盖；vt.将浮渣去除掉； 变形： 过去式：scummed过去分词：scummed现在分词：scumming第三人称单数：scums 英英释义： scum[ skʌm ]n.worthless people同义词：trasha film of impurities or vegetation that can form on the surface of a liquidv.remove the scum from