Coal has been the backbone of industrial progress, but its future must balance economic needs with environmental responsibility.

A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.

活着就是拥抱未来的不确定性。

时间不会治愈伤口，只会将它们埋在遗忘的层层之下。

"The bond of family is stronger than any challenge."