葡萄酒通常是由发酵葡萄制成的酒精饮料。 酵母消耗葡萄中的糖并将其转化为乙醇，二氧化碳和热量。葡萄品种不同，酵母菌株不同，葡萄酒的风格自然也就不同。 Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol, carbon dioxide and heat. Different varieties of grapes and strains of yeasts are major factors in different styles of wine.