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. 层
noun [具体名词] 层；层次，等级；摆放者，铺设者，产卵者；压条
Critics and the public puzzle out the layers of meaning in his photos. 评论家和公众苦思冥想出了他照片中的层层含意。
verb [vt. 及物动词] 分层放置；把（头发）分层剪短；用压条培育（植物）
Layer half the onion slices on top of the potatoes. 把一半洋葱片一层层地放在土豆上。
- layer 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 88 Trapped in a mine layer 名词: 层
