well drainage area

例句：

1. 1. The well drainage area is designedto prevent water from seeping into theground.
   这个排水区的设计是为了防止水渗入地下。
2. 2. The well drainage area was builtto improve the quality of the soil.
   这个排水区的建设是为了改善土壤的质量。
3. 3. Thewell drainage area is crucial for maintaining thehealth of the ecosystem.
   这个排水区对于维护生态系统的健康至关重要。