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6 个月
知识科普:高中生发表了毕达哥拉斯定理的“不可能”证明
这一开始是高中数学竞赛的一个奖励问题,现在却产生了惊人的10种新方法来证明古老的数学规则毕达哥拉斯定理。 长期以来,人们都认为不可能用 ...
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San Diego plane crash
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