cooperation可数吗

　　They, too, would be likely to exact a high price for their cooperation.

　　他们也可能会为提供合作而索要高价。

　　NATO had charted a new course for stability and cooperation in Europe

　　北约制订了保持欧洲稳定与合作的新计划。

　　Such policies would require unprecedented cooperation between nations

　　这样的政策要求国家间进行空前的合作。