The origin of the idea of Worlds Fair is found in the French tradition of national exhibitions, that culminated with the French Industrial Exposition of 1844 held in Paris.
这个想法的起源的世界博览会在法国的传统民族展览，与法国工业博览会在巴黎举行的1844年经济学。
The origin of the idea of Worlds Fair is found in the French tradition of national exhibitions, that culminated with the French Industrial Exposition of 1844 held in Paris.
这个想法的起源的世界博览会在法国的传统民族展览，与法国工业博览会在巴黎举行的1844年经济学。
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