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iBT新托福重点考察词汇:sediment

2012-07-09来源:和谐英语

  1)sediment  / ˈsedɪmənt; ˋsɛdəmənt/ n [U]
  matter that settles to the bottom of a liquid 沉淀物: a wine with a gritty sediment 有沙粒状沉淀物的葡萄酒.
  matter (eg sand, gravel, mud, etc) carried by water or wind and deposited on the surface of the land 沉积物(如沙、 砾石、 泥等).
  2)sedimentary / ˏsedɪˈmentrɪ; ˏsɛdəˋmɛntərɪ/ 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 沉积岩(如砂岩、 石灰岩、 板岩).
  3)sedimentation / ˏsedɪmenˈteɪʃn; ˏsɛdəmɛnˋteʃən/ n [U]
  (geology 地质) process of depositing sediment 沉淀; 沉积.