难止旱?

珍惜可用水 减少浪费,才不会遭遇无水可用之困境!
[img]http://3.bp.blogspot.com/-gZyzwfQJSN0/VR6lbH0YBoI/AAAAAAAABbU/xkdgGoDbURI/s1600/watersa.png[/img]