Metastigmata

例句：

1. 1.The metastigmata layer is crucial for the formation of the rock.
   副石层对于岩石的形成至关重要。
2. 2. The metastigmata layer contains minerals that are essential for plant growth.
   副石层含有对植物生长至关重要的矿物质。
3. 3. The metastigmata layer can be used as a marker to identify different types of rocks.
   副石层可以用作识别不同类型岩石的标志。