| 释义 |
- 1
Sediment as you know, is material like sand, gravel, fossil fragments that is transported by natural processes like wind, water flow or the movement of glaciers. 如你所知，沉积物是通过风、水流或冰川运动等自然过程输送的物质，如沙子、砾石、化石碎片等。 - 2
The water was always laden with pebbles, gravel, and sand, known as glacial outwash, that was deposited as the flow slowed down. 水里总是遍布鹅卵石、砾石和沙子——它们被称为冰水沉积，是在水流减缓时沉积下来的。 - 3
The commonest spaces are those among the particles—sand grains and tiny pebbles—of loose, unconsolidated sand and gravel. 最常见的空间是那些由松散的、未固结的砂和砾石组成的颗粒（沙粒和小卵石）之间的空间。
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