He points out that both Hong Kong and Zurich have managed to make a success of their rail systems, heavy and light respectively, though there are few cities in the world as hilly.

他指出，尽管世界上很少有城市像香港和苏黎世那样多山，但香港和苏黎世都成功地建设了各自的轻铁和重铁系统。

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Photographers showed either the beauty of the night sky or the immensity of light pollution from cities.

摄影师们既展示了夜空的美，也揭露现今城市严重的光污染现象。

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The most memorable cities of the future are characterised more by darkness, by the survival of fragments of a recognisable present, than by light and efficiency.

未来最令人难以忘怀的城市会更多的以黑暗、依稀可辨的遗迹为特征，而不是通明的灯火及高效的运转。

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The Tyne and Wear Metro was the UK's first light rapid transit system and serves the cities of Sunderland and Newcastle as well as Gateshead and districts of North and South Tyneside.

BBC: The Tyne and Wear Metro network is 25 years old

Another group of big cities that may be seeing light at the end of the tunnel are some of the metro areas hit hardest by the bursting of the housing bubble.

MSN: The best cities for jobs

Light rail between the major cities of Louisiana, Texas and Mississippi will instantly increase the economic clout of the Gulf region.

NPR: Light Rail Would Connect More than Point A and B