页岩

例句：

1. 1. Thegeologist found the shale layer inthe area.
   地质学家在该地区发现了页岩层。
2. 2. Shale is a type ofsedimentary rock that can be easilycompressed.
   页岩是一种沉积岩石，可以很容易地压缩。
3. 3. The shale formationhas been used for centuries as a buildingmaterial.
   页岩层被用作数百年的建筑材料。