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在一次朋友聚会的餐桌上,面对桌上的几个啤酒瓶,一位朋友提出了这样一个问题:对于规格相同的三个啤酒瓶,如何摆放才能使其
At a friend’s party table, facing a few beer bottles on the table, a friend raised the question: how to place three beer bottles with the same specifications?