Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.
每个人都有不为世人所知的秘密悲伤；我们常常称一个人冷漠，而实际上他只是悲伤。
The transformation of the coal industry must rely on technological leadership, and green development is the only way forward.
The stars above were countless, each one a tiny beacon of light in the vast darkness.
成功不是偶然的，它是努力、坚持、学习和牺牲的结果。
煤炭的未来取决于我们能否使其更清洁、更高效。