股市崩溃在数字上没有具体的规定，不过这一名词一般适用于股票市场指数在几天之内跌去两成甚或更多的情况。

There is no numerically specific definition of a crash but the term commonly applies to steep double-digit percentage losses in a stock market index over a period of several days.

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素食主义者的身体质量指数一般较低，患癌症的几率也比较低。

Vegetarians tend to have a lower body mass index and lower overall cancer rates.

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因为这种基金不用花钱雇用重量级(并且很贵)的MBA基金管理者来选择股票，而且指数基金一般以其它基金更便宜。

Because the fund does not have to pay some hotshot (and expensive) MBA fund manager to pick stocks, an index fund is often cheaper than any other mutual fund.

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So if you think about the way something like, say, Mapquest works, and last week in recitation you looked at the fact that shortest path is exponential.

所以如果你想想电子地图，还有上周学的列举法,你就会发现一般最简单的方法,都是指数递增的。

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The S&P 500 is 500 companies, who are major companies, so these tend to be mature companies and they tend to be in the dividend-paying stage.

标准普尔500指数包括500家大公司,这些一般都是成熟期的公司,他们一般都处于需要支付股利的阶段

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