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Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
动物体内的血液被推动着循环,处于永不停息的状态。
一个人,如果不是他们留下的痕迹,又是什么呢?
Sustainability must be profitable, or it won't be sustainable at all.
讲故事的艺术是将梦想编织成现实的艺术,使不可能的事情看起来可能。