subsurface flow

例句：

1. 1. The subsurface flow of groundwater is a significant factor in determining the quality of soil.
   地下水的流动是决定土壤质量的一个重要因素。
2. 2. The engineers monitored the subsurface flow to ensure the safety of the construction site.
   工程师们监测了地下水流动以确保施工现场的安全。
3. 3.The subsurface flow of groundwater can be used for irrigation and other agricultural purposes.
   地下水的流动可以用于灌溉和其他农业目的。