比如让那些你可能在一个地方、或是一张照片里圈出来的“好友”不爽的行为。

Behaviour that can upset the friends who you might "tag" at a location or "tag" in a photo.

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圈出讨厌的事情发生时人的行为。

Circle what people do when annoying thing happen.

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不过对于某些行为(比如吸烟、喝酒)来说，社交圈的直接影响十分明显，但对于肥胖来说就不那么明显了。

For some behaviors, such as smoking or drinking, the direct network effect is quite apparent, Fletcher says. But for others, such as obesity, the case is less clear.

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