求翻译：政治上，西欧城市形成自治，不存在封建制度下封主与封臣的关系。与之相反，中国城市的产生很早且一向发达，但中国城市自古以来就没有从整个封建社会结构分化出来获得独立发展，而一直是受主流结构体系的制约是什么意思？

Politically, the formation of autonomous cities in Western Europe, there is no seal, under the feudal system, the relationship between master and vassal. In contrast, Chinese cities have been long and well-developed cities in China since ancient times but there is no differentiation from the feudal

Politically, the Western European cities, create autonomy does not exist under feudal lord closures and closure of statistics. In contrast, China's cities have a very early in the developed economies, but China is an ancient city is not from the entire feudal society polarized structure, and access

In politics, the Western Europe city forms autonomously, does not have under the feudalism to seal the host and to seal feudal official's relations.With it opposite, the Chinese city production is very early also always developed, but the Chinese city on has not split up since the ancient times from

Politically, the Western European cities formed autonomous, there is no relationship between Lord and vassal under the feudal system. In contrast, Chinese cities have a very early and has been developed, but China's feudal society in the city since ancient times from the entire structural differenti

Politically, West European city forms the autonomy, does not exist and seal the main fact and seal the official's relation under the feudalism. Contrary to it, the production of the city of China is very early and always developed, but the city of China has not differentiated and won independent dev