求翻译：开封历史悠久，早在北宋时期这里就是全国的政治、经济、文化中心，也是当时世界上最繁华的都市之一，素有“国际都会”之称。各个朝代的更迭交替给开封留下了众多的文物古迹:开封的仿古建筑群风格鲜明多样，宋、元、明、清、民初各个时期特色齐备，除原有的龙亭、铁塔、相国寺等古迹外，新建的宋都御街古朴典雅，再现了北宋京城的风貌。是什么意思？

Kaifeng has a long history, here is the early Northern Song Dynasty China in political, economic and cultural center, is the world's most prosperous cities in the world, known as the "world city," said. Alternately to each change of dynasty Kaifeng left a large number of cultural relics: Kaifeng's d

kaifeng has a long history, as early as the period of the North Song Dynasty here is that the national political, economic, and cultural center and a world at the time of the most prosperous cities, known as a "world city". various dynasties to Kaifeng superceding the old one left a large number of

The Kaifeng history is glorious, as early as in Northern Song Dynasty time here is national politics, the economy, the cultural center, also was at that time in the world one of liveliest metropolises, was known as “internationally can” the name.Each dynasty alternated has in turn left behind the mu

Kaifeng has a long history, as early as during the Northern Song dynasty and there's the country's political, economic and cultural center, is one of the most prosperous cities in the world at that time known as "the world city," said. Various dynastic change of alternating left opened a large numbe

Kaifeng has a long history older Northern Song dynasty period here is national cultural center political, economic,, world one most prosperous city, "cosmopolitan:". Various dynastic change of alternating left opened a large number of cultural relics and historic sites: Kaifeng style antique buildin