In the Harvard study, published Wednesday in the scientific journal PLoS One, the flu developed about two weeks earlier in the friend group than in the randomly selected group.

这项哈佛大学的研究发表在周三的科学杂志plos One上面，研究发现在被指认为朋友的人中，流感的出现要比随机挑选的人早两个星期。

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With a different volatility for the stocks because that was also selected randomly, plus some market bias.

或者均匀分布的一个随机值,因为数值选择上的随机性，再加上市场偏好。

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Even when the program office finally acknowledged in 2011 that home visits were unworkable, the requirement of the geographic sampling structure was not modified so that when investigators started recruiting in clinics, they were forced to restrict recruitment to women living in the randomly selected neighborhoods.

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In their yet-to-be-published article, the company randomly selected 100 portfolios containing 30 stocks from a 1, 000 stock universe.

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The company renders animal byproducts and had randomly selected the animal for testing on April 18, he said.

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