(1)合作(work or act together with sb for a common purpose)[I，I+prep(with)(on/in)，I+prep(with)+to-inf]：refuse/agree to～拒绝/同意合作;It's impossible to～with such a person.和这样的人是无法合作的。～(with sb) on a project(与某人)合作搞一个方案;～(with sb) in an attempt (to do sth)/a task/a fight(与某人)合作试图做某事/承担一任务/进行斗争;～(with a friend)in raising money(与朋友)协同集资;～(with another doctor)in performing an operation(与另一名大夫)合作做手术;〖同〗 participate;〖反〗oppose，conflict;

(2)配合，协助(作)(be helpful and do as one is asked)[I]：“If you～we'll let you go，” said the police officer.“你如很好配合，我们会放你走。”警察说。

→co(-)′operator n 合作者;co(-)͵ope′ration n 合作;协助;co(-)′operative adj 合作的;n 合作社;co(-)′operatively adv 合作地