Each group has a set of traditions about how new people become official members.

VOA: special.2009.09.25

And when these groups were set in competition against each other, the Eagles versus the Rattlers, the within-group intensity grew.

当这两队小男孩,要与另一队互相竞争时，老鹰对响尾蛇，这种群内感情开始变强烈。

耶鲁公开课 - 心理学导论课程节选

"An empowered group of ministers has been set up to study whether any changes in the law are necessary.

VOA: standard.2010.06.10

Last week, Israel's Deputy Prime Minister Moshe Ya'alon set off a storm when he described the group as a "virus."

VOA: standard.2009.08.23

Meanwhile,the terrorist group released a set of demands for the release of a French hostage who was acting as a security advisor to the Mogadishu government.

VOA: standard.2009.09.17