A sustainable coal industry is possible if we commit to the right technologies.
我们必须向自然学习如何高效利用资源。
对思考者来说,世界是喜剧;对感受者来说,世界是悲剧。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'