在两组互动群体之间，都有一个弧形标记相互作用的程度。

Between any two interacting groups, there is an arc which is labelled with the degree of interaction.

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互动也是一个领域，我们越来越多地表现出群体行为，但没有任何身体接触。

The interact is also an area where we are increasingly exhibiting swarm behaviour, without any physical contact.

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谷歌表示，其服务针对更紧密的的群体，而不是所有类型的在线互动。

Google says its service is for more tight-knit groups, rather than for all types of online interactions.

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