Benefits spread out to three degrees of separation, meaning a better chance at happiness for not only their friends' friends, but also their friends' friends' friends.

这种收益能在“三度分离”范围以内传播。意思就是，如果这个人快乐，那么不仅他朋友的朋友会被传染快乐，他朋友的朋友的朋友也会被传染。

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Within 20 degrees of separation from you initial smile to the three people, the entire world will be smiling.

只需要20度的分隔,从你用笑容感染三个人开始，全世界就会笑起来。

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People have profound influences on each other's behavior within three degrees of separation, the authors find.

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In an odd three-degrees-of-separation, White's old job as head of equity capital markets at Credit Suisse was reclaimed by Ernesto Cruz, who is married to Zoe Cruz , the former head of fixed income at Morgan Stanley whose promotion to co-president of the firm in March helped precipitate the management turmoil.

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