- 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
- a deposit of clay, silt, sand, and gravel left by flowing streams in a river valley or delta, ...
Oxford American Dictionary
...aileron ailmemt alleged allegro allergy allness allonge allonym allover alluvia aplasia aplenty Atlanta awlwort 2007-03-20 06:26:06 補充： balance ...
... is supplied not by erosion of wave-cut cliffs but by alluvium carried to the sea at times of flood. 大部份海灘上的砂不是由海浪...
...natural soils (Wilkening 1974), but is expected, as the alluvium soils in the U1a complex are very coarse. 這個估計的數值...