录音原文

Don: I was awakened this morning by a flock of birds outside my bedroom window. They were singing up a storm at five in the morning. Somebody ought to blast music in the ears of birds when they're sleeping. See how they like it.
唐：今天早上我被卧室窗外的一群鸟惊醒了，才五点钟它们就开始喧闹了9d;8qTFBAvlFPom。人们应该在鸟儿睡觉的时候往它们耳朵里灌些音乐才对——当然了，这些音乐应该是他们自己所喜欢的MN%O9mKJ(ZkfY(R&3O-s。
Yael: Well, actually, scientists have done just that, and there's reason to believe birds already have music on the brain when they're sleeping. Scientists believe that birds dream about their songs. The key is a structure in birds' brains that controls the nerves that make singing possible. Not only does this structure control the bird's singing, but it also responds to sounds. What's interesting is that this structure has been shown to be significantly more responsive to sound, especially to recordings of the bird's own voice, when the bird is asleep. Even when scientists aren't playing recordings of the bird's own songs to its sleeping brain, this structure shows bursts of activity throughout the duration of the creature's sleep cycle. So it seems the bird is hearing music in its head.
耶尔：哦，实际上，科学家们已经做到了这一点z%Y^6kAuGw|0h。而且，我们有理由相信，鸟儿即使睡觉时脑袋里也在萦绕着旋律iEb!s[2HP[eB_#wk。科学家们认为，鸟儿就是睡觉时也在唱歌^6&Qa78EMEA。其中的关键是，鸟儿的脑部具有一种结构，这种结构用来控制歌唱神经W2-gdVI4X7TOlbG5H。这种结构不但可以控制鸟儿的歌唱，还对各种声音特别敏感cs&..|78BSL_vo-qF8。有趣的是，证明显示，当鸟儿睡着时，这种结构尤其对鸟儿自己的声音反应强烈4bZa%tv=[A。即使科学家们不向睡着的鸟儿播放它们自己的叫声，这种结构的阵发性活动也会贯穿于鸟儿的整个睡眠周期RN^EM%BS__rD^W@。因此，这如同鸟儿在聆听它们脑中的音乐一样4n&6r,%B@e*X5ogW]2。
D: That's peculiar alright, but why would a bird want to dream about what he sings all day?
唐：这太神奇了D&SbYLDiwg2c。但是，鸟儿为何做梦还在唱？他们都唱了一整天了o,oP|08Zo=Dt。
Y: The theory is that dreaming about its songs helps the bird learn its songs and possibly improve them. As with most activities in life, birds learn to sing by studying and practicing. To be good singers they need to listen to songs and reproduce them. Scientists believe that when the bird sleeps it might be re-playing songs from the day, possibly memorizing the songs and trying out variations on the tunes.
耶尔：理论认为，睡梦中唱歌有助于鸟儿学习并提升歌唱技巧T6aVnNI=ZnHi。鸟儿生活中的大部分活动都用于学习和练习歌唱-zH7S^5|B27J~uE。一个好歌手需要不断地聆听歌曲并且不断的做出改进XX+#(P7Ce2iB。科学家们认为，鸟儿睡觉时脑中可能在重播它们白天所唱的歌曲——可能是在背诵歌曲并尝试不同的曲调变化B;D[EJIqOF!QLrx=。

重点讲解

1. flock n.羊群，一群；大量 vi.群集，聚集，成群
例句：There are many flocks of tourists in the palace. 宫殿里有好几群游客RSJLByhI[vK9&0J#Mzo。
2. respond vi.回答，答复；(to)作出反应，响应
例句：I invited her to dinner but she did not respond. 我请她吃晚饭，但她未作回答,O!Dwx6X%1J。Many people responded to the call for service in the countryside. 很多人都回应了农村服务的电话T04bHkTxPjGBt7l。
3. significantly adv.意味深长地, 意义深远地, 重要地, 较大地
例句：Significantly New York is left out of this list. 意味深长的是纽约这个城市的名字从名单中划掉了FJ9Ed);Jm4n84&JX=M)C。
4. burst vt.使爆裂 vi.爆炸；挤满 n.爆炸；爆发
例句：The police burst through the door. 警察破门而入I[C@x+bDf9,YgD_7BBt。
There was a burst of laughter in the next room. 隔壁房间里突然爆发出一阵笑声YAHL1lGMa.zT[]C。