煤炭行业要深化供给侧结构性改革，提高供给质量。
The coal industry must deepen supply-side structural reforms and improve supply quality.
解释：以芍药相赠，以文无（一种中药）相招，展现了中药在人际交往中的特殊意义。
译文：读过的旧书要反复地阅读，读透读深才能知道书中的道理。赏析：经典的好书必须要反复阅读，常读常新，读懂书中的内容就会受益匪浅。
宁可要1个超级用户，也不要100个普通用户。
"The role of business is to produce goods and services that people value more highly than their cost, and to do so while consuming as few resources as possible."
It’s on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.