英语听力：自然百科 啤酒是如何酿成的—4

 After cooling, yeast¹ is added to start fermentation stage. Yeast allows beers of all flavor to peak while it converses² the remaining sugar into carbon dioxide and alcohol,giving beers a carbonation  and alcohol content. So the brewers are using the same for basic ingredient and the same basic brewing³ processes. How do we end up with thousands of unique styles of beer to choose from.

Beer making is not the wild wide wises, well wide open world. From the home brewers to the big guys, there is a room for a lot creative cookery.

I traveled the world and met lots of brewers and one unique aspect about people that make beers, that’s the passion about what they are doing. 

Great brewers likes queen chefs, using their own special combinations of barley⁴, hops⁵ and bubbling yeast. Another factor that affect the style of beer is the alcohol content. How much alcohol is bound to the style of beer is partially⁶ determined⁷ by the government regulations which differ in each country and state. But mostly it’s driven by consumer demand. The percentage of alcohol in a single beer runs from an average 3% to over 10 and even besides 17.5  in some specialty beers

1 yeast   

n.酵母；酵母片；泡沫；v.发酵；起泡沫

参考例句：

• Yeast can be used in making beer and bread.酵母可用于酿啤酒和发面包。
• The yeast began to work.酵母开始发酵。

2 converses   

v.交谈，谈话( converse的第三人称单数 )

参考例句：

• We now shall derive the converses of these propositions. 现在我们来推导这些命题的逆命题。 来自辞典例句
• No man knows Hell like him who converses most in Heaven. 在天堂里谈话最多的人对地狱最了解。 来自辞典例句

3 brewing   

n. 酿造, 一次酿造的量 动词brew的现在分词形式

参考例句：

• It was obvious that a big storm was brewing up. 很显然，一场暴风雨正在酝酿中。
• She set about brewing some herb tea. 她动手泡一些药茶。

4 barley   

n.大麦，大麦粒

参考例句：

• They looked out across the fields of waving barley.他们朝田里望去,只见大麦随风摇摆。
• He cropped several acres with barley.他种了几英亩大麦。

5 hops   

跳上[下]( hop的第三人称单数 )； 单足蹦跳； 齐足（或双足）跳行； 摘葎草花

参考例句：

• The sparrow crossed the lawn in a series of hops. 那麻雀一蹦一跳地穿过草坪。
• It is brewed from malt and hops. 它用麦精和蛇麻草酿成。

6 partially   

adv.部分地，从某些方面讲

参考例句：

• The door was partially concealed by the drapes.门有一部分被门帘遮住了。
• The police managed to restore calm and the curfew was partially lifted.警方设法恢复了平静，宵禁部分解除。

7 determined   

adj.坚定的；有决心的

参考例句：

• I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
• He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。