sediment

• Channels generally contain coarser sediment than do the adjacent flood plains .
  河床沉积物一般比邻近的泛滥平原沉积物粗些。
• The oldest sediments cored to date are about 150 million years old .
  到目前为止取出的最老沉积物的岩心是大约15亿年以前的生成。
• Very great strides in sampling ocean-floor sediments were taken in the late 1960's .
  海底沉积物取样的巨大进步是发生在六十年代后期。
• Suspended sediment also injures the gills and breathing structure of certain types of fish .
  悬沉积物还伤害某些鱼类的的鱼鳃和呼吸结构。
• Sediment deposits in ditches result in the raising of water tables and damage to crops .
  泥沙淤积在排水沟引起地下水位上升，并危害作物。
• The total volume of sediments carpeting the ocean bottom has turned out to be surprisingly small .
  覆盖海底的沉积物的总体积显得惊人地微小。
• The term sediment as used in this section may also refer to solids other than sand particles .
  除泥沙外，其它一些固体在本文中也属泥沙范畴。
• Such rapid influxes of sediment probably overwhelm the bottom dwellers in an area .
  沉积物如此迅速的汇集可能把这一地区的海底生物全部淹没了。
• Mrecator might be used by a geologist mapping current directions in palaeozoic sediments .
  地质学家可用麦卡托投影来绘制古生界沉积的水流方向。
• Mercator might be used by a geologist mapping current directions in palaeozoic sediment .
  地质学家可用麦卡托投影来绘制古生界沉积中的水流方向。