可持续发展不再是可选项，而是任何负责任的采矿业务的必要条件。

She's simply too strange. We can't relate to her, she speaks in a funny way, she comes from an odd place. So we can't relate to her, and when you can't relate to somebody, you don't envy them. The closer two people are -- in age, in background, in the process of identification -- the more there's a danger of envy, which is incidentally why none of you should ever go to a school reunion, because there is no stronger reference point than people one was at school with.

每一场比赛都是证明自己的新机会。

世界是一切事实的总和。

统计学是从数据中学习的科学。

The books we read in childhood are like a secret garden, a place where we can escape and dream.