water filling source

例句：

1. 1.The city relies heavily on its water filling source for its daily supply.
   该城市严重依赖其水源补给源来满足日常需求。
2. 2. The farmers have to rely on rain and groundwater as their main water filling source.
   农民们主要依靠雨水和地下水作为他们的水源补给源。
3. 3.The construction of this new reservoir will greatly increase the city's water filling source capacity.
   这座新水库的建设将极大地增加城市的水源补给源容量。