When we run out of water, as we are in some parts of the world and soon to be in other parts of the world, we're going to have to get this from the sea, and that's going to require us to build desalination plants.
如果水资源枯竭 这已经在有些地区发生了 不久的将来在全球都会出现这样的问题 我们就得从海里取水 这就要建海水淡化处理厂