One of the best things about being filthy rich is the massive passive income it affords you. Ask Singapore. We don’t know exactly how rich they are — that’s a state secret. But we do know how large their passive income is. Can we work out how rich they might be just by looking at this income? We can try.
成为富得流油的人最美妙的事情之一，就是你能获得巨额的被动收入。问问新加坡就知道了。我们并不确切知道他们到底有多富——这是国家机密。但我们确实知道他们的被动收入有多庞大。那么，我们能不能仅凭这份收入来推算他们可能有多富？我们可以试一试。
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