维京人在九世纪时有了第一个重大发现。

The Vikings' first major discovery occurred in the ninth century.

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这是在九世纪首次提到的关于酿酒的说法。

This was first mentioned in reference to brewing in the ninth century.

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传说阿尔弗雷德在九世纪末奠定了它的基础。

Legend has it that Alfred laid its foundations at the end of the ninth century.

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