A secondary group entails two or more people who are involved in an impersonal relationship and have come together for a specific, practical purpose.

第二群体指的是两个或两个以上的人，他们处于一种非个人的关系中，因一个特定的、实际的目的走到一起。

youdao

Three colleges have come together to create a new university.

三所学院合并成了一所新的大学。

《牛津词典》

When the two armies come together, they come together in a trot.

当两军碰上，他们都一路小跑。

youdao

Mark Johnson writes on the CD: "As a human race we come together for birth, we come together for death.

VOA: special.2009.07.31

All of these would come together to produce what would be a new political and religious reality called Israel.

所有这一切结合起来产生了,新的政治和宗教现实，叫做以色列。

耶鲁公开课 - 旧约导论课程节选

And we try to just have a community where undergraduates majoring in chemical engineering can come together

我们就想为化学工程的本科生建立一个让他们能聚在一起的组织，

重建社团小组 - SpeakingMax英语口语达人

We hope that these two projects will come together and create a structure of continued involvement.

CNN: Who are the champions of women in technology?

And I'm confident that we can get there if people of goodwill come together.

WHITEHOUSE: Remarks by the President in Personnel Announcements

There are a lot of things that come together in an event like this.

NPR: Admiral Coordinating New Orleans Recovery