Ponte Vecchio in Florence is one of the famous tourist attractions in Italy, and considered as the oldest stone arch bridge in Europe.

佛罗伦萨的维奇欧桥是意大利最著名的旅游景点之一，并且被认为是欧洲最古老的石结构桥梁。

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Pennsylvania's nickname is the keystone State. Just as a keystone holds together a stone arch, Pennsylvania was seen as holding together the young American republic.

宾夕法尼亚州的别名是“拱心石之州”。就如拱心石支撑起石拱一样，人们认为宾夕法尼亚支撑起了年轻的美利坚共和国。

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The Lugon Bridge known in the West as Marco Polo Bridge which spans the Dongding River to the Southwest of Beijing is the oldest stone arch bridge extant in Beijing.

卢沟桥位于北京西南的永定河上，是北京现存最古老的一座石拱桥。

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Just as a keystone holds together a stone arch, Pennsylvania was seen as holding together the young American republic.

VOA: special.2009.08.23

The same boats also compete to bring tourists out to the famous natural stone arch where the Pacific Ocean and the Sea of Cortez meet.

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He has suggested a steel frame and a stone outer shell, leaving enough space for stairways, lifts and service ducts leading to the space in the pediment above, and a basement - possibly a nightclub - linking the arch with the existing stone lodges on either side.

BBC: 'Romantic' attempt to save lost arch