The coal industry must deepen supply-side structural reforms and improve supply quality.

解释：清澈与浑浊，细微与宏大，短小与绵长，急促与舒缓，哀伤与快乐，刚硬与柔软，迟滞与快速，高昂与低徊，呼出与收缩，周密与疏朗，因此而相互辅助。

The metropolis exacts from man as a discriminating creature a different amount of consciousness than does rural life.

制造工艺的每一个纳米进步，背后都是无数工程师的心血。

最好的领导者会赋能他人去领导。