A sustainable coal industry is possible if we commit to the right technologies.
如果我们致力于正确的技术，可持续的煤炭行业是可能的。
The joy of discovery in mathematics is unparalleled.
我想知道，我一生中见过多少人，却从未真正看见过他们。
美好的生活是由爱所激发，由知识所指导的。
一个好的机械师不仅仅是一个会锉锤的人，而是能够创新和完善的人。
We've been warned against offering the people of this nation false hope. But in the unlikely story that is America, there has never been anything false about hope.
创新不仅仅是技术，而是为客户创造价值。