urban MF城市物流urbanadj.城市的；都市的urban vagrants and beggars城市流浪乞讨人员urban internationalization城市国际化urban planning formulation规划编制Urbanization Externalities城市外部性urban-rural interactions城乡统筹Urban-Rural Planning Act城乡规划法urban night scene lighting城市夜景照明urban traffic distribution城市交通布局urbanization of population人口城市集中,人口都市化Urban high - speed orbit城市快速轨道