cooperationn.
英 kəʊ,ɒpə'reɪʃ(ə)n | 美 ko,ɑpə'reʃən
中文n. 合作，协作；[劳经] 协力
词根词源
cooperation (n.)late 15c., from Middle French coopération, or directly from Late Latin cooperationem (nominative cooperatio) "a working together," noun of action from past participle stem of cooperari "to work together," from com- "with" (see com-) + operari "to work" (see operation).
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