这些功能区是相关功能主体空间集聚的结果，它们的空间变化带动了城市空间的演化。

Related functions of these functional areas are the main result of spatial concentration, which leads to the spatial variation of the evolution of urban space.

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接着以盐城市为例，考察、分析和评价了盐城市市域主体功能区开发的现状、特点和存在问题。

Then takes Yancheng as example to review, analyse and evaluate the status quo, characteristics and problems of the development of main function zones of Yancheng City.

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接着以盐城市为例，考察、分析和评价了盐城市市域主体功能区开发的现状、特点和存在问题。

Then takes Yancheng as example to review, analyse and evaluate the status quo, characteristics and problems of the development of main function zones of Yancheng City.

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