Gutenberg fashioned his printing press because he had been in the wine business and was familiar with the mechanics of grape vises.

古登堡改进印刷机是因为他曾待在葡萄酒厂并熟悉葡萄压榨机的工作原理。

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They used a grape press, tasted juice in various stages of fermenting and attended a "riddling" lesson, learning how to turn wine bottles to facilitate yeast removal.

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