a natural process in which rock is formed from small pieces of sand, stone, etc. that have been left by water, ice, or wind

The process of sedimentation helps to explain the origin of fossils. 沉积作用可以帮助解释化石的起源。

a process in which small pieces of a solid material fall to the bottom of a liquid and form a layer

These dregs at the bottom of the bottle are formed by a process of sedimentation. 瓶底的渣滓是通过沉淀作用产生的。