重土

例句：

1. 1. The farmer is busy planting his crops in the field.
   农民正在田地里种植他的庄稼。
2. 2. The city is surrounded by mountains and rivers, making it a beautiful place to live.
   这个城市被山脉和河流包围，是一个美丽的居住地。
3. 3. The scientist conducted experiments on the effects of different soil types on plant growth.
   科学家对不同土壤类型对植物生长的影响进行了实验。