| 单词 | scum |
| 释义 | Word Frequency scum(skʌm) noun 1. a layer of impure matter that forms on the surface of a liquid, often as the result of boiling or fermentation 2. the greenish film of algae and similar vegetation on the surface of a stagnant pond 3. Also called: dross, scruff the skin of oxides or impurities on the surface of a molten metal 4. waste matter 5. a worthless person or group of people verbWord forms: scums, scumming or scummed 6. (transitive) to remove scum from 7. (intransitive) rare to form a layer of or become covered with scum Derived forms scumlike (ˈscumˌlike) adjective scummer (ˈscummer) noun Word origin C13: of Germanic origin; related to Old High German scūm, Middle Dutch schūm, Old French escume; see skim |
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