能源革命的核心是清洁高效，煤炭行业必须主动适应这一趋势。

Disneyland will never be completed, as long as there is imagination left in the world.

The most important property of a program is whether it accomplishes the intention of its user.

采矿技术的创新不是一种选择，而是我们对工人和环境应尽的义务。