单词	opus operatum
释义	opus operatum noun opus ope·​ra·​tum -ˌäpəˈrätəm, -rā- plural opera operata -tə : the efficacy of the action compare ex opere operato Word History Etymology Medieval Latin, literally, work done
随便看	ruling (on) ruling elder ruling engine ruling grade ruling on ruling out ruling pen rulings rullion rullions rullock ruly rum rum ac rum bo rum cherry rum disease rum essence rum est pro pa rum factor rum ma rum malaria rum pars mag rum per ob rum pos

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