ground ray

例句：

1. 1.The ground is covered in snow.
   地面覆盖着雪。
2. 2.The scientist needs to dig a hole in the ground to plant the seeds.
   科学家需要在地面上挖一个洞来种植种子。
3. 3.The groundwater is being pumped from the ground.
   地下水正在从地面上抽取。