reservoir backwater

例句：

1. 1. The reservoir is full offish, providing a good source of foodfor the local people.
   这个水库里有很多鱼，为当地居民提供了很好的食物来源。
2. 2.The government has been working on building anew reservoir to improve water supply.
   政府一直在努力建设一个新的水库，以改善供水。
3. 3. Thereservoir is an important part of the irrigation system in this region.
   这个水库是该地区灌溉系统的重要组成部分。