随着这些组织在全美各地蔓延，其中一些不仅复制其他联谊会的社交活动，还会效仿它们的过激行为。

And as those groups have spread across the country, some have replicated not only the social networking of other fraternities, but also their excesses.

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并举办一些社交联谊聚会及其他活动，以维系义工的归属感及团队精神，同时也增加义工与职员之间的认识。

Social gatherings and other activities are also organized to promote a sense of belonging and team spirit among the volunteers as well as enhancing their relationship with the staff.

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