So, this paper discusses the problem about "when to cooperate".

基于此，本文研究了“协同时机”的问题。

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Instrumental ties are social links formed when we cooperate with other people to achieve some goal.

工具性联系是我们为了实现某种目标而与他人合作时形成的社会联系。

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When the peasants refused to cooperate, the gangsters bound their hands and hacked at them using machetes.

当农民们拒绝配合时，犯罪团伙就将他们的手绑起来，用弯刀砍他们。

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"History shows us that when nations fail to cooperate or when turn away from one another, when they turn inward, the price for our people only grows,"

VOA: standard.2009.04.01

She also accused her former ex-husband of lying to Whitewater prosecutors when he agreed to cooperate with their investigation.

CNN: The trials and tribulations of Susan McDougal

When Lewinsky agreed to cooperate, he no longer needed Tripp.

CNN: There's Something About Linda

Those not in school had an obligation to play by the rules when in school, and to cooperate.

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