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More often, we simply cooperate with others to reach some end without endowing the relationship with any larger significance.

更多的情况下，我们与他人合作只是为了达到一些目的，而不赋予这段关系任何更大的意义。

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Young athletes can, for example, learn how to cooperate with others, make friends, and gain other social skills that will be used throughout their lives.

例如，年轻运动员可以学习如何与他人合作、交朋友，获得其他社会技能，这些技能将使他们一生受用。

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In other words, one of the reasons we cooperate with others is to avoid feeling guilty.

FORBES: The Neuroscience of Guilt Uncovers the Origin of Cooperation

In the more than 36 years I have practiced criminal defense law, I have had many occasions to represent people who, out of self-interest, chose to cooperate with law enforcement against others in order to avoid criminal prosecution or obtain leniency.

FORBES: Why do people have a negative view of cooperators?

The team, including Nicola Clayton and Nathan Emery, discovered that the eight pairs were happy to cooperate, with some pairs solving the task straight away, others taking a day or two to work out that team-work was the key to getting their nibbles.

BBC: Rooks team up to solve problems