The second solution was for folding the paper in a single direction. This is the case when you try to fold a long narrow sheet of paper.
第二种方案是将纸按一个方向折叠，就是折叠一张长但窄的纸。
The second solution was for folding the paper in a single direction. This is the case when you try to fold a long narrow sheet of paper.
第二种方案是将纸按一个方向折叠，就是折叠一张长但窄的纸。
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