市场观察家认为，夏季过后，股市的波动并不一定会停止。

There's no reason to think this volatility will stop just because the summer is over, market observers say.

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尼德·霍夫在芝加哥写了几篇调查报告说股市的波动是可能被预测的。

At Chicago, Niederhoffer wrote several research papers arguing that it was possible to detect predictable movements in the stock market.

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当然，这只是个平均值，某些外国股市的波动的确比美国市场更剧烈。

Of course, that's an average figure, so some foreign markets were indeed more volatile than the u.

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