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。
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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