becquerelite

例句：

1. 1. The limestone formations in the area are very beautiful.
   该地区的石灰岩形成非常美丽。
2. 2.The limestone quarry is a popular tourist attraction.
   石灰岩采石场是一个受欢迎的旅游景点。
3. 3.The limestone layer in the ground is being used for building materials.
   地下的石灰岩层正在被用作建筑材料。