来自《耶鲁大学开放课程：金融市场 第5集 第5集》

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  Then, once we did that we could plug that into the formula that
  再将估算出的数值代入到
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  I gave you last time and
  上节课给你们的公式中
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  get the standard deviation of the portfolio
  就能得到资产投资组合的标准差
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  and the expected return on the portfolio.
  和该投资组合的预期收益率
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  From then on,if you accept the analysis
  如果你们理解了整个分析过程
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  and the assumptions or the estimates that underlie it,
  假设前提以及各项资产的有关估算
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  then we pretty much know how to construct portfolios.
  就能知道该怎样建立一个投资组合
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  The underlying estimates may not accord with your belief
  各项资产有关估算结果可能与你的预想
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  or your intuitive sense of common sense.
  或直觉不相符合
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  The other thing that I mentioned last time was that
  上节课提到的另一条内容是
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  there seems to be a really big difference
  股票市场的预期收益
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  between the expected return on the stock market
  与短期债券的预期收益