| 单词 | alluvium |
| 释义 | alluvium From Longman Dictionary of Contemporary EnglishGeographyalluviumal‧lu‧vi‧um /əˈluːviəm/ noun [uncountable] technicalSGsoil left by rivers, lakes, floods etcExamples from the Corpusalluvium• The soils are developed on marine or estuarine alluvium found between the normal high-water mark and the limit of highest spring tides.• The soils are developed on freshwater alluvium.• Using open cut excavation where possible, Nuttall has moved about 26,000 cu m of alluvium and gravel.• Usually floodplains are not veneers of alluvium explicable by lateral channel movements, but considerable thicknesses smoothing over more complex relief.Origin alluvium (1600-1700) Late Latin Latin alluere, from ad- “against” + lavare “to wash” |
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