The key to understanding life is to understand the interactions between its components.
我必须学会满足于比我应得的更幸福。
The coal industry must deepen supply-side structural reforms and improve supply quality.
解释:百姓参加了劳动就会因劳累而去思考如何节俭律己,若经常思考这些问题,就会使自己的心地善良起来;无所事事就会放肆起来,一旦放肆,就会忘掉善良,没有善良就会滋生作恶之心。
能源领域的创新不是可选项;它是必须的。