layer

柯林斯词典

1. N-COUNT A layer of a material or substance is a quantity or piece of it that covers a surface or that is between two other things. 層
...the depletion of the ozone layer. …臭氧層的損耗。
2. N-COUNT If something such as a system or an idea has many layers, it has many different levels or parts. 層次
Critics and the public puzzle out the layers of meaning in his photos. 評論家和公衆苦思冥想出了他照片中的層層含意。
3. V-T If you layer something, you arrange it in layers. 分層放置
Layer half the onion slices on top of the potatoes. 把一半洋蔥片一層層地放在土豆上。

Cover the meat with a layer of cheese .
Women have a layer of subcutaneous fat that provides them with better insulation than men.
The eruption had covered the town with a fine layer of ash .
A thick layer of dust had accumulated in the room .
If the first layer isn't dry before you add the next one, the colours will run into each other .