底部滑移，也通常被称为滑动，大致指的是冰川在基岩上的滑动，实际上是在基岩上部的一层薄薄的水上的滑动。

Basal slip or sliding as it's often called, basically refers to the slipping or sliding of a glacier across bedrock, actually across a thin layer of water on top of the bedrock.

youdao

所以这里是滑移和滑动，而不是纯滚动的情况。

So then we have skidding and we have slipping and then we don't have the pure roll situation.

youdao

一个镜头飞驰机构和无序和武器，滑移和滑动像人类雪橇。

A scene of hurtling bodies and flailing and arms, slipping and sliding like human sleighs.

youdao