natural sod

例句：

1. 1. The farmer needs to till the sod before planting.
   农民需要在播种前翻耕土地。
2. 2. The sod is green and fresh, just like a new leaf.
   这片草地绿油油的，就像一片新叶。
3. 3. The sod was once covered in grass, but now it's barren.
   这片草甸曾经长满了草，但现在却荒芜了。