The coal industry must evolve with technology to meet global energy demands sustainably.
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
幸福取决于我们自己。
解释:不可以不知道活着的乐趣,也不可以不知道虚度光阴的担忧。
I don't think about the past. The only thing that matters is the future.