| 单词 | alluvium |
| 释义 | alluvium/əˈl(j)uːvɪəm /noun [mass noun] A deposit of clay, silt, and sand left by flowing floodwater in a river valley or delta, typically producing fertile soil.Many vineyards are located on valley bottoms underlain by alluvium which can provide deep, free-draining soils of variable grain size....
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