The nineteenth century is a period of both urban growth and urbanization.

十九世纪是城市发展以及城市化的时期。

To see how that increase influenced urban growth, researchers looked at 95 excavation sites in London.

为了研究海洋捕鱼队城市发展的促进意义，研究人员们调查了伦敦区内95个考古发掘站点。

To start, the city has experienced a tremendous amount of urban growth in the past few decades.

首先，在过去的几十年里，这座城市经历了巨大的城市发展。

There is a good reason for that: unconstrained urban growth in the late 19th century fostered crime and disease.

19世纪晚期无限制的城市扩张成为了犯罪和疾病的温床。

It's a rate of progression that was only really made possible by a long-term strategic plan to control urban growth.

只有通过长期的战略规划指导城市发展，才有可能取得如此高速的进程。

The world has experienced unprecedented urban growth in the recent decades.

近几十年来，世界经历了前所未有的城市增长。

Seattle is one of the fastest growing big cities in the U.S and urban growth is often associated with the loss of green spaces.

西雅图是美国增长最快的大城市之一，城市的增长往往与绿地的丧失联系在一起。

Lifting all the barriers to urban growth in America could raise the country's GDP by between 6.5% and 13.5%, or by about 1 trillion-2 trillion.

如果能扫清美国境内所有限制城市增长的阻碍因素，那么国家GDP将会增加6.5%~13.5%，即10亿~20亿美元。

Lack of resilience, rapid urban growth and flood frequency have unfortunately made Afghanistan one of the world's leaders in deaths per capita due to flooding, on top of dealing with decades of war.

不幸的是，除了应对数十年的战争之外，缺乏恢复力、城市快速发展和洪水频发使阿富汗成为世界上因洪水造成的人均死亡人数最多的国家之一。

And there's reason to believe an exodus was coming, regardless millennials who are responsible for much of the urban growth in the early part of the decade are reaching an age where city life might have run its course.

所以，我们有理由相信，人口外流的时代正在到来，不考虑在本世纪前半叶对城市增长负有主要责任的千禧一代，城市生活模式可能已经结束。