Many written works from this period have survived.

许多这个时期的文字作品留了下来。

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Through the Middle Ages new written works on botany were very rare.

整个中世纪，有关植物学的新著作甚少。

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Through the Middle Ages new written works on botany were very rare.

整个中世纪，有关植物学的新著作甚少。

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