而且小鼠堪称生育超人，从怀孕到分娩所需时间大约3周，生产完就能立刻怀孕，鼠宝宝长到两个月大就可以“结婚生子”。
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。纸飞机下载对此有专业解读
We start by picking a real number r. Your job is to approximate it as closely as possible using a rational fraction a / b with a reasonably small denominator. The approximation can’t be the same as r. Is this task easier if r itself is rational or irrational?
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