近30年来,城市空间经历了相当可观的变化。在人口、经济、技术、社会与种族等因素交相作用之下,大城市解体了。关于市区的概念,例如市中心或市的边界的概念,含义已和过去不同。大城市如今有所谓集合城市、特大城市、大都会等之称。提到城市,人们仍然想到一个多功能的中心及其边缘地带,但实际所看到的却是一片连绵不绝的城市空间,大体上按社会生活的主题组织起来:劳动、生产、服务、居住以及娱乐等。城市作为社会生活与文明活动的处所,作为Polis(城邦)和公共场合——respublica(共和国)——是民主与公民的身份与权利的诞生之地。而由于集合城市的 In the recent 30 years, urban space has undergone considerable changes. With the demographics of the population, economy, technology, society and race, the big cities have collapsed. The concept of a city district, such as the concept of a city center or the border of a city, is different from the past. Big cities nowadays have so-called collective cities, megalopolises, metropolises, and the like. When it comes to cities, people still think of a multipurpose center and its fringe, but the actual urban space it sees is largely organized according to the themes of social life: labor, production, service, housing And entertainment. The city as a place for social life and civilizations, as Polis (city) and public --respublica (Republic) - is the birthplace of democracy and citizenship. And because of the collection of cities