網友回答：
we cannot survive on the earth. the world population is growing rapidly day by day. so enough fresh water is needed to feed such a big population. what s more，水資源_650字，請談談你的看法， the world will be prosperous. a good amount of it can no longer be used. only
溫馨提醒：隨時光變遷，文中所陳述觀點；準確性、難免有所變動，因此文中觀點僅供參考。
