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在数学中,从问题到答案的旅程往往比答案本身更具启发性。
保持简单,愚蠢。
The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.
"Language is the first casualty of power."
最困难的部分是放手,而不是参与。
It's not about how many times you get knocked down, it's about how many times you get back up.