在它的繁盛的时代，就是公元后十三世纪，那时是中国的元朝，有个商人名叫马可波罗曾到过中国，在扬州作过官。

In its heyday, that is, during China’s Yuan dynasty in the 13th century AD, an Italian merchant named Marco Polo visited China and became an official in Yangzhou.

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波斯文明在智力和艺术方面一直是令人赞羡的。但自从十三世纪遭受蒙古入侵后便一蹶不振了。

Persian civilization remained both intellectually and artistically admirable until the invasion of the Mongols in the thirteenth century, from which it never recovered.

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