But even if every large city reued its water,we still would not have enough.All we have to do to make ue of seawater in the world is to remove the salt.If we take these steps.We'll be in no danger of drying up.
參考答案:但是即使每个大城市都循环利用水,我们仍然没有足够的水.我们不得不的事是:去除海水中的盐来得到淡水. 如果我们采取这些措施,我们人类才将没有灭绝的危险.
