iBT新托福重點考察詞匯：sediment

1)sediment　　/ ?sed?m?nt; ˋs?d?m?nt/ n [U]

matter that settles to the bottom of a liquid 沉淀物: a wine with a gritty sediment 有沙粒狀沉淀物的葡萄酒.

matter (eg sand, gravel, mud, etc) carried by water or wind and deposited on the surface of the land 沉積物(如沙﹑ 礫石﹑ 泥等).

2)sedimentary / ?sed??mentr?; ?s?d?ˋm?nt?r?/ adj

of or like sediment; formed from sediment (似)沉淀物的; 由沉淀物形成的: sedimentary rocks, eg sandstone, limestone, slate 沉積巖(如砂巖﹑ 石灰?guī)r﹑ 板巖).

3)sedimentation / ?sed?men?te??n; ?s?d?m?nˋte??n/ n [U]

(geology 地質(zhì)) process of depositing sediment 沉淀; 沉積.

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