岩石般的

例句：

1. 1. The rocks are so hard that they can withstand the weight of a car.
   这些岩石如此坚硬以至于它们能承受汽车的重量。
2. 2. The mountain range is like a rock-solid fortress.
   山脉像一座坚不可摧的堡垒。
3. 3. The old building was made of rock-solid stone.
   那座老建筑是用坚硬的石头建造的。