sediment怎么读，sediment什么意思，sediment短语和例句

1.Most desert streambeds are normally dry, but they occasionally receive large flows of water and sediment.

大多数沙漠河床通常是干燥的，但它们偶尔也会有大量的水流和沉积物。

2.These seas have a typical oceanic floor, except that the floor is overlaid by several kilometers of sediment.

这些海洋有一个典型的海底，只不过这个海底被几公里厚的沉积物覆盖。

3.This sediment layer is enriched in the rare metal iridium and other elements that are relatively abundant in a meteorite but very rare in the crust of Earth.

这一沉积层富含稀有金属铱，以及其他在陨石中较丰富而在地壳中十分罕见的元素。

4.The sample consisted of pebbles of hardened sediment that had once been soft, deep-sea mud, as well as granules of gypsum and fragments of volcanic rock.

这一样本包括曾经柔软的的硬化沉积物的卵石、深海淤泥以及石膏颗粒和火山岩碎片。

5.Others point out that decreased sediment loads will likely lead to erosion of downstream riverbanks and the Mekong Delta.

其他人指出，泥沙负荷的减少可能会导致下游河岸和湄公河三角洲的侵蚀。

6.Samples recovered from the expedition revealed important differences in chemical composition and fossil distribution among the sediment layers.

探险队采集的样品揭示了沉积物层之间化学成分及化石分布上的重大差异。