4周搞定2000+托福核心词
sedentary = sed(坐) + ent(…的) + ary(…的) = 坐着的，固定不动的
sedmentary = sed(坐) + ment(表名词) + ary(…的) = 坐到底下的→沉积的，沉淀的
acment = ac(加强) + ment(表名词) = 伴随物
accompliishment = ac(一再) + com(全部) + pli(满) + ish(表动词) + ment(表名词) = 全部满足→完成
坐下来的物质→沉淀物
sediment
常考释义
Salmon cannot spawn in streambeds clogged with sediment, dirt, from the surrounding area.
大马哈鱼是不能在满是从周围地区冲下来的沉积物和泥土的河床上产卵的。
来源于：听力OFFICIAL52 L2n. 沉淀物；沉渣
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。
Salmon cannot spawn in streambeds clogged with sediment, dirt, from the surrounding area.
大马哈鱼是不能在满是从周围地区冲下来的沉积物和泥土的河床上产卵的。
来源于：听力OFFICIAL52 L3They are found wherever fast rivers carrying loads of coarse sediment once flowed.
在携带粗糙沉淀物的湍急的河流曾流过的地方都能找到它们的踪迹。
来源于：阅读OFFICIAL1 P1n. 沉积物【地质】
Many organisms that die in the sea are soon buried by sediment.
海洋里死亡的许多生物会很快被沉淀物掩埋。
The underground sediment of the Ganges Delta contains arsenic.
恒河三角洲的地下沉积物中含有砷。
And that waters are a lot cleaner than swiftly flowing water because the dirt and sediment and stuff has a chance to sink to the bottom.
那水比快速流动的水清澈很多，因为污垢和沉淀物之类的东西有机会沉入水底。
来源于：听力OFFICIAL13 L3Mangrove root systems have the ability to absorb and well trap sediments and pollutants in water that flows through them before they enter the ocean.
红树林的根系有能力将流经他们的沉积物和污染物，在它们进入海洋之前，吸收并且很好地困住。
来源于：听力OFFICIAL27 L2Scientists studying soil samples there discovered evidence of bananas in sediment that was 5,000 years old!
研究土壤样本的科学家们在5000年前的沉淀物中发现了香蕉存在的证据。
来源于：听力OFFICIAL32 L2sediment transport
沉积物运移；泥沙流移；土砂流送
sediment deposition
沉积物沉降；淤积量
bottom sediment
脚子；底沉积物
sediment concentration
含沙量；沉积物浓度
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