这样折算率就是国家的借款成本，也就是市政债券的收益率。

So one possible discount rate is the state's cost of borrowing, the yield on its municipal bonds.

youdao

这个回报率通常指贴现因子、最低预期资本收益率或者资本的机会成本。

This rate of return is often referred to asthe discount rate, hurdle rate, or opportunity cost of capital.

youdao

收益率、生产成本，和维护成本都是战略商业目标的实例。

Profitability, costs of production, and cost of maintenance are all examples of strategic business objectives.

youdao

So, the optimal thing to do if you live in a world like this n is to get n as large possible and you can reduce the standard deviation of the portfolio very much and there's no cost in terms of expected return.

如果现实中也这样简单的话,那么你就尽量增大,这样就能让投资组合的标准差,就会大大降低,从预期收益率的角度来看,这样做的成本是零。

耶鲁公开课 - 金融市场课程节选