Looking at the returns of the Dow Jones over the past 40 years, there is an average return (CAGR) of 6.68% per year.

看看过去40年道琼斯指数的回报率，年平均收益率(复合年收益率)为6.68%。

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The top ten investment banks at the start of 2008 made an average return on equity of just 8% between 1999 and 2008.

2008年初的十大投资银行在1999年到2008年间的平均净资产收益率为8%。

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But their average return on equity was less than 8.2%, whereas that of larger non-state industrial enterprises was 12.9%.

但其平均净资产回报率还不到8.2%，而大型非国有工业企业的平均净资产回报率是12.9%。

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Moreover, it's had a 17.8% average return for the last ten years, which is number one among university endowments.

甚至,过去十年中,耶鲁基金的年均收益率高达17.8%,依然高居全美高校榜首

耶鲁公开课 - 金融市场课程节选

Then if you fast forward to 2005 and look at the average return that was posted for 2000,it was +1.2%.

如果把时间快进至2005,5年后公报的2000年平均收益,变成了1.2%

耶鲁公开课 - 金融市场课程节选

The difference between the average return for colleges and universities and Yale's returns has added $14.4 billion dollars to the University's coffers.

其他高校的平均收益率,与耶鲁的收益率的差距,为耶鲁财政增加了144亿美元

耶鲁公开课 - 金融市场课程节选

More deals mean less risk but also a smaller chance of a huge average return.

FORBES: Status seekers

Overall, Combs made 33% for 4 years, an average return of slightly over 8%.

FORBES: Buffett Acolytes Scrutinize Todd Combs' Returns And Wonder Why

But in September, they have fallen by 0.8%, the only month with a negative average return.

WSJ: Is the 'September Swoon' for Real?