五一劳动节英语相关词汇labour for public good 公益劳动labor and social seurity 劳动保障rehandling duplication of labor 重复劳动fruit of labor 劳动成果labor contract law 劳动合同法physical work / manual work 体力劳动manpower demand forecasting 人才需求预测systems engineering for manpower 人才系统工程labor and social security bureau 劳动和社会保障局labor arbitration 劳动仲裁international labor day(may day) 五一劳动节labor force, manpower 劳动力labor legislation 劳动法labor intensive 劳动密集型labour disputes 劳动争议labour discipline 劳动纪律labor of love 义务劳动recation through labor 劳动教养labor economics 劳动经济学working capacity labor capacity 劳动能力labour handbook 劳动手册paid labour 有偿劳动