translation.en: The reason why they came up with saying that Kyoto -- or doing something more than Kyoto -- is a bad deal is simply because it's very inefficient.
translation.zh: 为什么我们的专家认为执行京都协议， 或者做得比京都协议更多，并不是一个好主意？ 原因很简单， 因为这样做缺乏果效。