It's the world portfolio, it's everything and we compute the expected return on that portfolio, rm that's rm.

这就产生了世界投资组合,然后我们在此基础上计算出预期收益，所得值就是。

耶鲁公开课 - 金融市场课程节选

I want now to carry that forward into something a little bit more focused on the portfolio problem.

现在从这个基础上拓展一下,更侧重于投资组合方面的问题。

耶鲁公开课 - 金融市场课程节选

DNA also has this sort of combinatorial system where you have a finite number of, I guess, bases or amino acids that could combine to a possible infinity of strings of DNA strings.

脱氧核糖核酸也拥有这种组合系统,你的生物基础或氨基酸数量是有限的,但却能组合出,几乎无限的脱氧核糖核酸螺旋结构

耶鲁公开课 - 心理学导论课程节选

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