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我看了《邮票齿孔的故事》后,不相信邮票能撕得如此整齐。就找来一枚别针和一张纸,画了几枚邮票。可我
After I read “The Story of the Perforation of Stamps”, I do not believe the stamps can be torn so neatly. I got a pin and a piece of paper and drew a few stamps. but I