Now,there are lower urbanization level,feeblish heartland and lacking establishment in our urbanization construction.

目前,我城市建设面临城市水平偏低、中心城市偏弱、基础设施不足等问题。

In the second half of twentieth century, the development of Megalopolis has been the mainbody of American urbanization.

摘要20世期，大都市连绵带的发展成为美城市的主要内容。

Then, in light of different types or phases of urbanization, it puts forward a newly social security institution adopting new compensation measure or bringing into social security system directively.

并根据城市过程的差异,提出了采用新的补偿办法和直接纳入保障体系的新型社会保障制度,以推进城市进程。