adj.沖積的；淤積的

n.沖積土；淤積土

Some alluvial deposits are a rich source of diamonds. 一些沖積物是鉆石的豐富來源。

Bangkok is surrounded by a vast, damp, alluvial plain, crisscrossed by a network of klong. 曼谷為一個廣闊潮濕的沖積平原所環(huán)繞，有縱橫交錯的運河網(wǎng)。

Alluvial soils usually grow the best crops. 淤積土壤通常能長出最好的莊稼。

The farmers found the alluvial deposits at the mouth of the river very fertile. 農(nóng)民發(fā)現(xiàn)這條河口底下的沉積物很肥沃。