non productive labor

非生产性劳动,N... ... ) productive labor 生产性劳动 ) Non-productive Labor 非生产性劳动 ) non-productive labor 非生产劳动 ...

非生产性劳... ... ) Non-productive Labor 非生产性劳动 ) non-productive labor 非生产劳动 ) non-production labor 非生产劳动 ...