2.拉尔夫模式——永不言弃的“持久引擎”
Verify positive chunks
，这一点在易翻译中也有详细论述
This is a much broader class of numbers than rationals, but it’s not everything. There are many numbers, namely the transcendental numbers like $\pi$, that aren’t represented by these. So they’re not a silver bullet, but substantially broaden the class of things we can do exact arithmetic with.
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