translation.en: 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.
translation.zh: 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。