original rock

• 基岩

original rock的用法和样例：

例句

1. All that is needed on rock is a little concrete or mortar to make the surface level.
   在基岩上所需要做的全部工作是用少量混凝土或砂浆把表面找平。
2. The Maoping landslide is a large and old landslide of the bed rock in the Geheyan reservoir area of the Qingjiang River.
   茅坪滑坡是清江隔河岩库区一个大型的基岩古滑坡体。
3. The primary rocks were sparry oolitic limestone and micrite oolitic limestone, but dolomitization destroyed the original sedimentary textures.
   原生岩石为亮晶鲕粒石灰岩和泥晶鲕粒石灰岩，白云石化作用使其岩石结构大多遭受破坏。