Sediment is solid material that settles at the bottom of a liquid, especially earth and pieces of rock that have been carried along and then left somewhere by water, ice, or wind.
例句
Many organisms that die in the sea are soon buried by sediment.海洋里死亡的许多生物会很快被沉淀物掩埋。...ocean sediments.海洋沉淀物
英汉词典释义
n.
沉淀物
The sediment settled and the water was clear.杂质沉淀后, 水变清了。