友达指数 FriendRank
友指数
"Friend Index"
以上为机器翻译结果，长、整句建议使用 人工翻译 。
通过研究他们的体重指数，研究人员发现女性的社交圈内胖友越多，么该女性变胖的可能性就越大。
By looking at the Body Mass Index of the women and their friends and relatives, they discovered that the fatter a woman's social circle, the more likely she was to be obese herself.
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