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今天,我在家里折纸,发现了一个秘密。把一张正方形的纸对边折1次,变成了2个长方形。再把长方形的纸对边折第2次,变成了
Today, I origami at home and found a secret. A square of paper to the edge of a fold, into two rectangular. The rectangular paper was folded a second time and turned into it