Alcohol may be made by fermentation of many plants.

许多植物经过发酵可以提炼出酒精。

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Sugar is added to the wine during fermentation to increase the alcohol level.

发酵时在葡萄酒里加糖以提高酒精浓度。

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Sugar is added to the wine during fermentation to increase the alcohol level.

发酵时在葡萄酒里加糖以提高酒精浓度。

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