This iconic structure, built in Rome between 70 and 82ad, made spectacular use of the arch - a Roman architectural invention that has the beauty of opening up space but also being very stable.

这个代表性的建筑建于公元70 ~ 82年，用拱桥来显得蔚为壮观——这是罗马的建筑发明，它的美在于不仅扩大了空间，而且让建筑变得更加稳固。

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It was designed by John Nash in the style of Rome's Constantine Arch and built in 1827 as the chief entrance to Buckingham Palace.

报道说，伦敦大理石高45英尺(约合13.7米)，拱门迄今已经有180年的历史了，是约翰·纳什在1827年仿照罗马康斯坦丁拱门设计建造的。 当时，它是作为白金汉宫的主要入口。

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It is an arch dam, which is perfect for that rocky, narrow gorge in which it was built.

这是一座拱坝，建于多石又狭窄的峡谷上真是恰到好处。

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Mr. Justiss also built in a water bowl for the Fiacco's dogs and an arch-shaped doggy door leading from the outdoor shower area.

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Back in town, the white arch and cables of the Margaret Hunt Hill Bridge the first vehicular bridge to be built in the United States by Santiago Calatrava is in its final months of construction over the Trinity River.

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