有没有想过把圆周率用钢琴弹奏下来？

来源: 路边野花不採白不採于 2016-04-13 16:03:04 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

有没有想过把圆周率用钢琴弹奏下来？

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