善良的行为是最高尚的美德。
现实是一个视角问题;你离过去越远,它看起来就越具体和可信——但当你接近现在时,它不可避免地显得越来越不可思议。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
Knowledge is power.
The future of coal enterprises lies in intelligent mining and clean utilization.