co·op·er·a·tion /kəʊˌɒpəˈreɪʃən/ n. 1. 合作，协作；配合 The government sought the cooperation of the citizens in keeping the streets clean. 政府寻求市民配合，保持街道整洁。 The bridge was repaired by the two states acting in fruitful cooperation(with each other). 在两州富有成果的(彼此)合作之下，大桥修建竣工。 with the cooperation of sister colleges 在姐妹院校的协助之下 2. 【经】合作；合作社；合作性团体 3. 【生】(有机体间的)互助 4. 〈俚〉(男女间达成不结婚默契前提的)苟合