earth layer

• 土层

earth layer的用法和样例：

例句

1. The earth that covered it was drawn back like a floating drapery.
   她坐下来，把头垂向坟墓，就好像她能够透过密实的土层看到她的孩子似的。
2. Sometimes it took hours to chip away enough frozen earth to get to unfrozen ground.
   有时候破开冻土层得花上几小时时间，才能挖到未上冻的土层。