160714 -Cities of the future-BBC 6分钟英语

[视频作者] htcb1122

[视频时长] 6:18

[视频类型] 校园学习

What will the cities of the future look like? Vast mega-cities are emerging in the developing world as people migrate in search of work. Cities in the richer world need to find ways to improve the quality of life for their inhabitants.