修建始于公元前7世纪，历经数百年之久。

Construction took place over hundreds of years, beginning in the seventh century B.C..

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在二十世纪的百年历程中。

In the course of the 20th century.

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从20世纪20年代至今，我国对于叶芝的译介已有近百年。

Since 1920s, there has been nearly a century for China to translate Yeats' works.

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从20世纪20年代至今，我国对于叶芝的译介已有近百年。

Since 1920s, there has been nearly a century for China to translate Yeats' works.

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