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.

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。

youdao

A thin layer of dust covered everything.

所有的物品上都积了薄薄的一层灰尘。

《牛津词典》

Between the last layer of Cretaceous rock and the first layer of Cenozoic rock, there is often a thin layer of clay.

在最后一层白垩纪岩石和第一层新生代岩石之间，常常有一层薄薄的粘土。

youdao

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.

VOA: special.2009.04.21

A thin layer of water runs over this surface.

VOA: special.2009.05.06

For instance, electroplating can be used to coat a thin layer of gold on to a cheap piece of material.

ECONOMIST: MONITOR

In Afghanistan, the foam would be wrapped in a low-tech layer of chicken wire, then covered in a thin layer of concrete.

BBC: Aftermath of 1998 quake in northern Afghanistan

The cotton fibers are made conductive by coating the fibers, first with gold nanoparticles, and then with a thin layer of PEDOT.

FORBES: Weaving Cotton Transistors For Wearable Computing