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標題: [有趣貼圖(轉)] If Bob Ross had dogs [打印本頁]

作者: chris9510    時間: 2012-8-28 21:43     標題: If Bob Ross had dogs


作者: astarbaby    時間: 2012-8-31 17:00

好圓!!
大概可以用π來算面積了!




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