kalaite

例句：

1. 1.The white limestone cliffs are apopular tourist attraction.
   白色的石灰岩悬崖是一处受欢迎的旅游景点。
2. 2. The chalk inthe classroom is perfect for drawing and writing.
   教室里的粉笔非常适合绘画和写字。
3. 3.The limestone formations in the parkare fascinating to explore.
   公园里的石灰岩地貌非常值得探索。