历史这个游戏的玩家一般都是社会的最上层和最下层，占大多数的中间层次只有在台下看戏的份。

Investing in clean coal technologies isn't an expense—it's an investment in our future.

市场总是对的，但它并不总是反映公司的真实价值。

The problem is not that we laugh too much， but that we laugh about everything.

对自己抱有兴趣的人使我们感兴趣。