fresh water generator

fresh water generator fresh water generator can ______ 25 tons of fresh water GENERATOR Salt water into fresh fresh water lake piston cooling fresh water pump 和 jacket coolong fresh water _____precious fresh water is!(感叹句） 英译汉“Global Shortage of Fresh Water" this little amount of fresh water 英语作文Glebal shootage of fresh water Fresh 回答这个问题.what is fresh water?用英语