informal group

基本解释

Each one a legendary (1) singer and performer, Frank, Sammy, Dean, and others were not a music group, but an informal group of friends who sang and acted together in the US in the late 1960s.
法兰克、山米、狄恩和其他一些人个个都是传奇式的歌手、演员。实际上，他们并不是一个乐队组合，而是一个非正式的朋友团体——被称为“鼠帮”。
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Soon, as is the custom in most areas of XML development, an informal group got together to write common specifications for XML repository APIs. In this case it was the XML:DB group (see Resources).
很快，与 XML 开发的很多领域一样，又出现了一个非正式的小组来编写用于 XML 存储库 API 的公共规范，这就是 XML:DB 小组（请参阅参考资料）。
This article is about the experiment achievement of physical excise teaching in college by informal group division in public psychology principle.
运用群体心理的理论，在高校排球体育课中进行了非正式群体分组教学实验。

He heads an informal group of ten rich regions which lobbies the federal government.
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The White House has a weekly conference call with an informal group of Catholic advisers, and the Republican National Committee has revived a Catholic task-force.
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The restructuring, done under the auspices of the Paris Club, an informal group of western creditor countries, came earlier than expected and just in time for the first round of Iraqi elections expected in January.
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