1.如播卡顿或失败可切换片源。
2.如播放失败可点击切换线路。
3.我们最近发现视频里开始有插播广告，每个视频大概有好几秒，可以用快进跳过。这些广告都是视频源那边自带的，我们这边无法控制，谢谢大家的谅解。
年份：
2017
主演：
Ade
Adepitan
Anita
Dan
Rani
Snow
类别：
More than half of us now live in cities. Crowded, chaotic and bursting with life - these are places under pressure. In this brand new series, Dan Snow, Anita Rani and Ade Adepitan go behind the scenes to reveal the hidden systems and armies of people running some of the greatest cities on earth. Find out how Mexico City keeps its inhabitants safe from earthquakes, and meet local people who offer an inside look at life in metropolises like Delhi and Hong Kong. Meanwhile, Moscow's incredible architecture shows that the world's busiest cities also have some of the richest histories.
