urbanizevt.使都市化；使城市化urbanadj.城市的；都市的Urban Emergency System城市应急系统urban rubbish problems城市垃圾问题urban landscape system城市景观体系Urban Population Scale城市人口规模urban space near water城市滨水空间urban tourism resource城市旅游资源urban-rural gradient城乡梯度Urban land replacement城市土地置换urban social geography城市社会地理学Urban tourism function城市旅游功能