sediment
/ˈsɛd.ɪ.mənt/ 名词 C1中文： 沉积物、沉积
- A collection of small particles, particularly dirt, that precipitates from a river or other body of water. · The Nile delta is composed of sediment that was washed down and deposited at the mouth of the river.
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By deliberately narrowing the river channel, the embankments cleverly increased the velocity of the water, thereby helping to scour the riverbed clean of remaining sediment.
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