1. 珍珠在幾種軟體動物的貝殼中，圍繞著一粒沙子或其他外來物質(zhì)形成的一種光滑、有色澤、具有不同顏色且主要是碳酸鈣的沉積物，被珍視為寶石
   A smooth, lustrous, variously colored deposit, chiefly calcium carbonate, formed around a grain of sand or other foreign matter in the shells of certain mollusks and valued as a gem.
2. 成巖作用在巖石轉(zhuǎn)化過程中沉積物發(fā)生化學(xué)和物理變化的過程
   The process of chemical and physical change in deposited sediment during its conversion to rock.
3. 減少礦物沉積物的減少，如在煤礦中
   A narrowing of a mineral deposit, as in a mine.
4. 沉渣沉到液體底部的東西；沉積物
   Something that settles to the bottom of a fluid; sediment.

沉積的英語翻譯：

物的英語翻譯：