Man can only make progress in cooperative groups.

人类只有组成合作群体才能取得进步。

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Relay selection is a crucial challenge in cooperative communication.

中继节点的选择是协作通信中的重要问题。

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I suspect that motivation plays a role in many aspects of cognition, not just in cooperative behavior, but also in social learning, in communication.

我猜想动机在认知能力的多个方面都发挥了一定的作用，不仅仅是合作行为，也包括社会学习和信息交流。

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Doug Akers from the cooperative extension service at Purdue University in Indiana suggests straw or shredded leaves for the mulch.

VOA: special.2010.06.29

I think maybe the same movement that created the Yale Cooperative Society in the late nineteenth century also spurred credit unions.

我想大概在19世纪晚期,推动形成了"耶鲁互助会"的那场运动,同时也催生了信用合作社

耶鲁公开课 - 金融市场课程节选

So this mayor has made it cheaper and easier, more cooperative to make movies in New York City.

因此这位市长使得在纽约拍摄电影更低廉，更容易，并且能够得到更多的协助。

电影里的中央车站 - SpeakingMax英语口语达人

Mr. Cardin showed the utmost in cooperative leadership as the ranking member, along with Mr. Goss.

CNN: AllPolitics - Ethics Transcript

The answer, it seems, is to be found in cooperative initiatives on the micro-level.

FORBES: Magazine Article

This is the first time in nearly 20 years that the United States has hosted this forum, and it comes at a time when America is very focused on how we can work together in a cooperative, effective way in the Trans-Pacific region.

WHITEHOUSE: President Obama Welcomes Leaders at APEC Summit