There are skyscrapers constructed out of concrete, steel and glass all over the city.

整个城市充满了混凝土、钢筋和玻璃修建的摩天大厦。

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Glass boxes extend out 4.3 feet from the Skydeck on the 103rd floor, providing amazing views of the city.

在103层上，玻璃平台向外延伸4.3英尺，为游客提供了可以俯瞰整座城市的绝妙视角。

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A mattress is flopped near walls of glass that look out over the whole city.

一张床垫扔在玻璃墙边，透过玻璃可以俯瞰整个城市。

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In Los Angeles, developers of Beverly West, a 22-story condominium with 35 residences, allotted some of the homes' premium space for closets, giving them glass walls with views of the city's skyline and green space surrounding the building.

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Dozens of skyscrapers crowd the model from end to end, plate glass is everywhere suggesting that city planners see the Khartoum of the future shimmering like a giant chandelier over the desert.

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As environmental concerns become ever more prevalent, some architects are moving away from the glass, steel and concrete model of modern city building.

BBC: NEWS | South Asia | Architects urged to copy India