cooperation可作可数，也可作不可数。当cooperation的中文含义为“合作”、“协作”、“协助”、“配合”时，是不可数名词；当表示“各种各样的合作”时，是可数名词，复数形式是直接加s，即cooperations。
cooperation的基本意思及双语例句
cooperation作为可数名词，意为合作;协作;协助;配合。例句有：
1、We would like to see closer cooperation between parents and schools.
我们希望学生家长和学校有更加紧密的合作。
2、We would be grateful for your cooperation in clearing the hall as quickly as possible.
你们若大力协助尽快把大厅腾空，我们将不胜感激。
3、The UN had been co-operating with the State Department on a plan to find countries willing to take the refugees...
联合国一直都在与美国国务院合作推进一项计划，寻找愿意接纳难民的国家。
4、He agreed to co-operate with the police investigation...
他同意配合警方的调查。
5、They said they would give the police their full cooperation
他们说他们愿意与警方通力合作。
6、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。
7、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。
8、The meeting ended with a pledge to step up cooperation between the six states of the region.
会议以承诺加快这一地区六国间的合作而结束。
9、The meeting discussed how to promote cooperation between the two countries.
会议讨论了如何促进两国的合作。
10、The friendly cooperation between the two countries is growing with every passing day.
两国的友好合作关系日益发展。
