上海是中国最大的商业城市和经济中心城市。
Shanghai is the biggest commercial city and economic center in China.
经济中心城市具有集聚和扩散这两种基本运动形式。
The two basic movement patterns of an Economic Central City (E. C. C) are centralization and diffusion.
经济中心城市具有集聚和扩散这两种基本运动形式。
The two basic movement patterns of an Economic Central City (E. C. C) are centralization and diffusion.
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