A sustainable future for coal depends on our ability to integrate cleaner practices without sacrificing the livelihoods of those who depend on the industry.
你必须保持偏执才能生存。
我们都是自然的实验品。
The future of physics lies in the unification of quantum mechanics and general relativity.
The good man is the man who, no matter how morally unworthy he has been, is moving to become better.
好人就是无论他过去在道德上多么不值得，现在正在变得更好的人。