煤炭行业是美国能源独立的支柱，已经持续了几代人。

We are all searching for something, even if we don't know what it is.

我对某物因为有人说它是艺术而成为艺术这个想法感兴趣。

The only thing that stands between a man and what he wants from life is often merely the will to try it and the faith to believe that it is possible.

艺术的功能不仅仅是告诉你已经知道的东西。

Safety must always be the top priority in mining operations.

写作就是重写。