| 词汇 | alluvium |
| 释义 | alluviumWord family nounalluviumadjectivealluvial Geography al·lu·vi·um /əˈluːviəm/ noun [uncountableU] technical SGsoil left by rivers, lakes, floods etc 冲积层；冲积土 Examples from the Corpus alluvium• 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. (1600-1700) Late Latin Latin alluere, from ad- “against” + lavare “to wash” |
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