mehanite

例句：

1. 1. The mehanite formation is a popular tourist attraction in the area.
   这个石炭纪石灰岩形成区是该地区的一个热门旅游景点。
2. 2.The mehanite layer was formed over 50 million years ago.
   这个石灰岩层是在5000万年前形成的。
3. 3.The mehanite is used as a building material due to its durability and strength.
   由于其耐用性和强度，石灰岩被用作建筑材料。