The expansion of city scale is one of characteristics of urbanization.

城市规模的扩张是城市化主要的外在表现形式之一。

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The lag of agriculture and the over-expansion of city have become the two problems to be solved urgently.

农业落后，“城市膨胀”成为工业化过程中的“瓶颈”问题，也成为加速工业化进程急需解决的两大难题。

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With the rapid expansion of city size and population concentration, improving the urban disaster prevention system has become a daunting task can not be ignored.

健全城市防灾系统成为一项不容忽视的艰巨任务，这是由城市规模的急速扩大和人口的过度集中所造成的。

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In October 2012, the council approved draft plans for the largest expansion of the city for more than half a century.

BBC: Construction on house

Mr. Bloomberg's administration has made the expansion of the city's tech sector a priority during the mayor's third term, with a push to attract more companies and plans to open a new applied-science school that will foster the talent sought by both start-ups and established companies such as Facebook.

WSJ: Facebook Plans to Boost Its Presence in New York

Politicians in Bath are to launch their latest bid for expansion of one of the city's park-and-ride sites.

BBC: Bath council to launch new park-and-ride expansion bid