Every urban planner wants to avoid the “Oxford Street problem”. London’s famous 1.2 mile (1.9km) long shopping street is notoriously congested. Buses trundle along it at barely more than walking speed, spewing out the world’s highest concentrations of nitrogen dioxide.
每个城市规划者都想避免“牛津街(Oxford Street)问题”。伦敦这条1.2英里(1.9公里)长的著名商业街拥挤得出了名。在这条街上,公交车以比步行稍快一点的速度缓慢行驶,排出世界上浓度最高的二氧化氮。
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