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- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- troposphere layer 对流层
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中间通常含肉较多的那一层
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- A fine layer of dust covers everything. 所有的东西都盖了一层薄薄的灰尘。
- A layer, as of doubled-over cloth or of paperboard. 一层一层，如折叠过的布料或纸板的
- A surface, layer, or mass of frozen water. 冰面冻结的水的面、层或块
- Rain is created in the troposphere. 降雨往往是在对流层发生的。
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- The stratosphere is the layer above the troposphere and extends to about 50km. 平流层是从对流层顶向上延伸到50千米高空的界层.
- A thin, flat layer or scale, as that of a fish. 外表组织薄而平的一层或鳞状物，如鱼鳞
- Having a cortex or a similar specialized outer layer. 有皮的有皮的或具有相似的专门发育的外部覆盖的
- Why do we say troposphere and human are in most close relations ? 为什么说,对流层与人类的关系最为密切?
- Does the troposphere and stratosphere absorb solar radiation? 对流层和平流层会吸收太阳辐射吗?
- A coat or layer enveloping an organ or a part. 被膜一种覆盖器官或身体部位的覆盖层或包被
- A layer of skin peeled off her sun-burnt back. 她晒黑的背上掉了一层皮。
- The pollution had destroyed ozone layer and caused many changes in weather. 污染破坏了臭氧层，并引起了许多天气变化。
- The layer spindle was an early development. 层式纺锤形是早期发展起来的。
