流域

例句：

1. 1. The river flows through the mountainrange, forming a beautiful riparianecosystem.
   这条河流穿过山脉，形成了一个美丽的河岸生态系统。
2. 2. Theflood control project aims toprotect the riparian areasfrom future disasters.
   洪水控制项目旨在保护河岸地区免受未来灾害的影响。
3. 3.The city's water supply is mainlyderived from the nearby river, which isan important source of life for the localpeople.
   该市的供水主要来自附近的河流，这对当地人民来说是一个重要的生命来源。