科研之友
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<正>Zhaozhou Bridge is the oldest stone arch1bridge in the world. It was built in Sui Dynasty and has the nickname"King of Bridges".赵州桥是世界上最古老的石拱桥,始建于隋朝,有"桥王"之称。Zhaozhou Bridge, also known as Anji Bridge, has an important scientific and artistic value.
