煤炭行业必须依靠技术发展来可持续地满足全球能源需求
When angry, count ten before you speak; if very angry, a hundred.
Sustainability is not just a trend, it's a responsibility.
不幸之人有权结束自己的生命,尽可自行决定。但是,那将铸成大错。生命虽不幸,总有可为,也总可有所作为。活着就有希望。