Rural and suburban installations typically involve longer distances and tougher weather conditions than urban ones, making upkeep of the network more expensive.
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本周三早上，连接西南郊区和中心市区的燕房线——北京第一条无人驾驶地铁线路——开始第一次试运行。
The Yanfang line, Beijing's first driverless subway line connecting the city's southwest suburbs to its central urban district started its first pilot run on Wednesday morning.
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依我看，好的解决办法是二者结合，就是说在宽阔的地区多修路而在闹市区要多开辟公共汽车线路。
In my opinion, the right solution to the problem is the combination of the two, thatis, to lay down more roads in spacious areas and to open up more bus lines in downtown.
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