n. single thickness of usually some homogeneous substance
n. a relatively thin sheetlike expanse or region lying over or under another
n. a hen that lays eggs
n. thin structure composed of a single thickness of cells
n. 层, 产卵鸡, 放置者
vt. 分层堆积, 压植
[计] 层
1. The cake has three layers of chocolate and cream.
这个蛋糕有三层巧克力和奶油。
2. Please add a layer of paint to make the color brighter.
请再加一层油漆，让颜色更明亮。
3. She wore a layer of clothing to stay warm in the winter.
她穿了一层衣服以在冬天保持温暖。