If ease of use was the only requirement, everyone would still be riding tricycles.

艺术作品是独特气质的独特结果。

爱覆盖了许多的罪。

"Sometimes the hardest thing in life is to know which bridge to cross and which to burn."

绿色开采、低碳利用是煤炭行业可持续发展的必由之路。