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The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.
The greatest gift you can give someone is your time because you're giving them something you can never get back.
卡塞尔文献展必须始终令人惊讶,始终激发思考。
每一个挑战都是学习和改进的机会。
Fear is just a feeling. Don’t let it stop you.