co-operation [koʊˌɒpə'reɪʃəŋ]

例句:

• The formalization of co-operation between the republics would produce progress.
  正式确立合作关系将会促进共和国之间合作的顺利进展。
  
• Pushing the frontiers of exploration requires co-operation for advancement.
  来自SA
• Tedder and co. really can deliver hook after hook.
  来自BBC
• But in recent years that co-operation has broken down.
  来自BBC
• Co-operation was more than just an attractive option, it was an obligation.
  合作不仅仅是诱人的选择，它也是一种责任。
  
• Her lack of co-operation is nothing new, I regret to say.
  很遗憾，我不得不说她缺少合作精神不是什么新鲜事。