wair

例句：

1. 1. The river flows through the city, carrying wair and life to the people.
   这条河流穿过城市，为人们输送着水和生命。
2. 2. The farmer used a wair pump to help his crops grow.
   这位农民使用了一个抽水机来帮助他的庄稼生长。
3. 3. The scientist studied the effects of wair on human health.
   这位科学家研究了水对人类健康的影响。