granogabbro

例句：

1. 1. The construction site is covered in a thick layer of grey granite.
   施工现场覆盖着一层厚厚的灰色花岗岩。
2. 2. Granite is often used as a building material because of its durability and hardness.
   由于其耐用性和硬度，花岗岩常被用作建筑材料。
3. 3. The granite quarry is located in the mountains, providing an abundance of natural resources.
   花岗岩采石场位于山区，提供了丰富的自然资源。