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1. Oxford Dictionary

   alluvium

   • IPA[əˈl(j)uːvɪəm]

   英式

   • n.
     a deposit of clay, silt, and sand left by flowing floodwater in a river valley or delta, typically producing fertile soil.

   • noun: alluvium, plural noun: alluviums

2. • 更多解釋

   alluvium

   • IPA[əˈlo͞ovēəm]

   美式

   • n.
     a deposit of clay, silt, sand, and gravel left by flowing streams in a river valley or delta, ...

   Oxford American Dictionary