"I happen not to know the answer." Some analysts think Amiri's return could mean an exchange for Americans held in Iran.

VOA: standard.2010.07.13

I mean, do you really--you might wonder, aren't people missing something if the excess return is so high of stocks over short-term bonds?

我是指，你们真的。。。你们也会怀疑，这里是不是少了点什么,如果股票收益率高出短期债券收益率那么多？

耶鲁公开课 - 金融市场课程节选

Now, underlying our theory is the idea that we measure the outcome of your investment in your portfolio by the mean of the return on the portfolio and the variance of the return on the portfolio.

而理论的基础是,我们通过计算,组合收益率的均值，和组合收益率的方差,来衡量一个投资组合的优劣。

耶鲁公开课 - 金融市场课程节选