Definition
to create an indentation or cavity through repeated and continuous motion over an extended period.
沖刷出；磨出
The bottom of the bucket was nearly scoured out from constant use.
由于长期使用，水桶的底部几乎被磨穿了。
The river's flow has nearly scoured out a small canyon in certain places.
河流的冲刷几乎在某些地方形成了一個小峽谷。
After years of grazing, the cattle have scoured out several noticeable depressions in the pasture.
多年放牧后，牛群在牧场上磨出了几个明显的凹陷。