这种方法起源于国外，为发明者提供奖章、现金奖励和其他奖励。
This approach, originated abroad, offered inventors medals, cash prizes and other incentives.
好消息是，把时间换算成现金是促进省钱的最简单方法之一。
The good news: Converting time to cash is one of the easiest ways to boost your savings.
此方法是贴现现金流方法(该方法假定了一个最小期望回报率)的一个变体。
This method is a variation of the discounted cash flow method that assumes some minimum desired rate of return.
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