If you buy stock in a high tech company, that sells things on the internet, you might expect it to fluctuate enormously.

如果你选择买在网上进行销售的，高新技术公司的股票，它可能会变化非常大。

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They may fluctuate wildly, but if I look at enough stocks, the average should be right around 100.

他们可能会有很大的改变，但是如果我看过足够多的股票，平均值还是应该在100左右。

麻省理工公开课 - 计算机科学及编程导论课程节选

Economically identical, but their prices would fluctuate and fairly dramatically.

它们在经济意义上是相同的，但是他们的价格,会有波动，而且非常剧烈。

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If you will buy stock in an electrical utility which has a guaranteed revenue stream, because no matter how bad the economy gets, a lot of people still use electricity, you don't expect it to fluctuate a lot.

如果你在有着,保障性年收入的电气供应股票投资，因为不管经济变得怎么查，人们还得用电，它不会降多少。

麻省理工公开课 - 计算机科学及编程导论课程节选