英语听力：自然百科 啤酒是如何酿成的—6

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 This converts more starches¹ to fermentable² sugars which reduces the calories in the beer overall, an original bud weiser brewed³ in the US contains 5% of alcohol, 143 calories and 10.6 carbs, while a bud light weighs in at 4.2% alcohol, 110 calories and 6.6 carbs. Now if what you are looking for is a beer containing no alcohol, proceed with caution, beer labeled non alcoholic⁴ doesn't mean it contains zero alcohol, the legal definition in the US is less than 0.5% alcohol by volume, so the amount can vary by brewer⁵, with the variety of styles across the globe, you can think the family of beer is the united nations of beverages⁶. Barley⁷ is the powerhouse ingredient of beer, this cereal grain not only gives beer some of its great flavour and color, but it also provides a key element for the brewing⁸ process.