作为国际城市区域中的二级城市不仅在全球城市体系中发挥作用，同时也在国际城市区域中担任重要的功能。

This paper argues that a second-tier city in a global city region not only plays important functions in the global urban system but also within the global city region.

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除此外，生产服务业有较强的区域集聚性，多集中于世界的大城市之中，这些城市被冠之以“全球城市”的称谓。

In addition, Producer services are inclined to gather to a few of the world's major cities, which are called global cities.

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