#请爱护我们有限的水资源 搜索结果
tisgenerallybelievedthatthereisagoodsupplyoffreshwater.Buttoourdisappointment，thefactisjusttheopposite. Aswecansee，theworldpopulationisgrowingrapidlydaybyday.Soenoughfreshwaterisneededtofeedsuchabigp
