water stemming

例句：

1. 1. The riveris the main water source for the town.
   这条河是这个城镇的主要水源。
2. 2. The springis located in the mountains and provides freshwater for the village.
   这个泉位于山区，为村庄提供新鲜的水。
3. 3. The source ofthe water is unknown, but it's believed to be underground.
   水的源头未知，但据信是地下的。