lithemia

例句：

1. 1. The construction site was covered in a layer of fresh limestone.
   施工现场覆盖着一层新鲜的石灰石。
2. 2.Limestone is often used as a building material for roads and bridges.
   石灰石常被用作道路和桥梁的建设材料。
3. 3.The limestone formations are fascinating to explore due to their unique texture and color.
   由于其独特的纹理和颜色，石灰石的形成物非常值得探索。