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Mathematician discovers how to fold the smallest origami doughnut
一张纸要折叠多少次才能做成甜甜圈?几十年后,一位数学家确定了最有效的技术
How many paper folds would get you to the moon?
折叠一张纸会使其变厚。需要折叠多少次才能到达月球以及更远的地方?