sleeper-layer

常见例句

This layer of rock contains a lot of flint.
这一岩层中有大量燧石。
The football game was won by a sleeper, an unknown new player.
足球比赛爆冷门，有一匹黑马赢球了，是一个名不见经传的新球员。
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。
I have bought a ticket for a sleeper.
我买了张卧铺票。
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