I wanted to -- well, one of the biggest changes is, 200 years ago, we began using coal from underground, which has a lot of pollution, and 100 years ago, began getting gasoline from underground, with a lot of pollution. And gasoline consumption, or production, will reach its limit in about ten years, and then go down, and we wonder what's going to happen with transportation.
我想，最大的变化之一是两百年前， 我们开始掘煤燃煤，导致了很多污染， 另外一百年前，我们开始开采石油， 也导致了很多污染，石油开采，或者说石油生产， 将在十年之后达到顶峰，之后只能走下坡， 我不知道将来我们要怎么交通。