Coal will remain part of the energy mix, but it must be cleaner and more responsible.
煤炭仍将是能源结构的一部分，但它必须更清洁、更负责任。
幸福是一种心态，而不是一系列环境。
The strength of the pack is the wolf, and the strength of the wolf is the pack.
森林的真正价值不能仅用板材英尺来衡量。
The writer must be a defender of freedom, even at the cost of his own comfort.
