co-operation cooperation, n [U] 1 ~ (with sb) (in doing sth/on sth); ~ (between A and B) (in doing sth/on sth) acting or working together for a common purpose 合作; 協作 a report produced by the Government in co-operation with the chemical industry 政府在化工部門的配合下所提出的一份報告 co-operation between the police and the public in catching the criminal 在追捕罪犯過程中警方與公眾之間的相互配合. 2 willingness to be helpful and do as one is asked 樂於協助或配合的態度 Please clear the gangways, ladies and gentlemen. Thank you for your co-operation. 女士們、 先生們 請別堵住通道. 謝謝諸位大力協助.