保护大城市边缘区及其附近的开敞空间及其他资源;
Protecting the edge areas and the open spaces of the big cities;
准确把握大城市边缘区的概念与本质特征是问题研究的基础。
To precisely understand the concept and the attributes of urban fringes is the basis of the study.
政策和制度是大城市边缘区形成演变保障机制的两个关键因素。
Policy and system are two major elements affecting the development of suburban areas.
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