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.

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。

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Climate change is a global hot topic nowadays. The changing characters are differently from city to city and from region to region.

气候变化是全球性的热门话题，不同城市、不同地区的气候变化特征各不相同。

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