A very thin layer of things like atoms or molecules that are all in one flat surface.
The new paint created a smooth monolayer on the glass.
新油漆在玻璃上形成了一层光滑的单分子层。
In living things, a layer of cells that is just one cell thick.
The skin is made up of several different types of cell monolayers.
皮肤由几种不同类型的细胞单层构成。