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360P
把北京环线放到其他城市对比大小9（陕西、英国）
以北京环线作为参考，对比下陕西十市及英国城市
城市大小对比13/18
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App05:35以北京环线作为参考，对比下陕西十市及英国城市
App02:37App03:01App04:30App05:01App03:47App05:36App03:35App06:02App08:44App05:41App08:25App01:10App05:08App01:50App03:38App07:40App05:50App05:35
