Background: Canadian winters can be brutal, but thisenormous underground complex provides commuters with a quick and warmway to get around downtown Toronto.

背景材料: 加拿大的冬季非常严酷，但这个巨大的地下建筑为人们提供了一条快捷，温暖的通道以避开多伦多的闹市区。

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As the Shanghai downtown construction-intensive, complex terrain, has been the focus of three-dimensional modeling and difficult.

由于上海中心城区建筑密集，地形复杂，一直是三维建模的重点和难点。

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The bridge to be demolished lies in downtown area of the city with complex environment.

待拆的桥梁位于城市闹区，环境复杂，拆除安全是首要考虑的因素。

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Martha, we learn, has fled without warning to a run-down apartment complex downtown named The Madrid and is living out a sort of post-mid-life-crisis fantasy.

WSJ: Review: Edie Falco shines in touching 'The Madrid'

In Chevron's 50-story complex in downtown Houston, geophysicists are sniffing out the next generation of deepwater oil wells.

FORBES: Magazine Article

One high-profile deal involves its purchase in late 2012 of a grade-A office and five-star hotel complex in downtown Shanghai from a distressed local developer.

WSJ: Blackstone Takes Aim at Asia