Leptosol

例句：

1. 1.The geologists are studying the Leptosol layers in the area.
   地质学家正在研究该地区的地层。
2. 2. The Leptosol layer is a key to understanding the history of the region.
   地壳层是理解该地区历史的关键。
3. 3. The Leptosol layer is made up of minerals and rocks that have been eroded from the surface.
   地壳层由从地表侵蚀而来的矿物质和岩石组成。