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数学不是一项观赏性运动。你必须亲自去做才能理解它。
Mathematics is not a spectator sport. You have to do it to understand it.
The past is a shadow that follows us, but it doesn't have to define us.
科学是人类智慧的结晶,是推动社会进步的重要力量。
通往可持续能源未来的道路需要一种平衡的方法,考虑经济、环境和社会因素。