lime-rock

例句：

1. 1. The lime-rock formations are unique and beautiful.
   石灰岩形成物独特且美丽。
2. 2. The lime-rock was used to build the ancient city walls.
   石灰岩被用来建造古代城墙。
3. 3.The lime-rock is a popular material for building houses and roads.
   石灰岩是建造房屋和道路的流行材料。