sediment
sediment 英 [ˈsedɪmənt] 美 [ˈsɛdəmənt]
n. 沉积；沉淀物
名词复数:sediments
- Sediment is the accumulation of sand and dirt that settles in the bottom of lakes. Sediment is also what you get in the bottom of a glass of iced tea when the sugar doesn’t all dissolve.
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- n. 沉积；沉淀物
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1. Ocean plants buried in sediment can help reveal Earth’s temperature thousands of years ago.
沉淀物下被埋的海洋植物能帮助揭示数千年前地球的温度（变化）。
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2. When snorkeling, do not touch the coral or stir up sediment, as these actions can damage the reef's fragile ecosystem.
潜泳的时候，不要碰珊瑚礁或者搅动沉淀物，因为这样做或许会破坏珊瑚脆弱的生态系统。
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3. His team analysed mud samples from Lough Monreagh in Ireland and discovered layers of white sediment made up of calcite crystals from algae.
他的团队分析了爱尔兰洛蒙雷阿湖泥浆样本，发现了由海藻中方解石晶体构成的白色沉淀物涡旋层。
- sediment (n.) 1540s, "matter which settles at the bottom of water or other liquid," from Middle French sédiment (16c.) and directly from Latin sedimentum "a settling, sinking down," from stem of sedere "to settle, sit," from PIE root *sed- (1) "to sit."
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