subsurface drainage

例句：

1. 1. The construction of the new road will significantly improve subsurface drainage.
   新道路的建设将显著改善地下排水。
2. 2.The rainwater is being collected for use as a source of subsurface drainage.
   雨水被收集起来用作地下排水的来源。
3. 3.The engineers were tasked with designing a system that would effectively manage subsurface drainage.
   工程师们被指派设计一个系统，以有效管理地下排水。