剑桥雅思报考指南 第28期:OG06 Recording 30

 听力文本

Recording¹ 30

录音30

1. We've recently been doing some research involving mice. We were trying to find out what causes the cells in our body to age.

1、我们最近在做一些和老鼠有关的研究。我们尝试找出我们体内的细胞老化的原因。

Is it linked to diet or exercise? What we found was that if we allowed the mice no exercise, their cells deteriorated² fairly rapidly, giving them a prematurely³ old body.

这和饮食或运动有关吗？我们发现，假如我们不让老鼠运动，它们的细胞退化地相对迅速，身体变得早衰。

The mice that did exercise, showed less change in their cell structure and so seemed younger.

运动的老鼠，其细胞结构的变化更小，看起来更年轻。

2. We've known for decades that pigeons can navigate⁴ using the Earth's magnetic field as a sort of compass. What we don't know is how this works.

2、我们几十年前就已经知道，鸽子能利用地球磁场作为指南针导航。我们不知道的是其工作原理。

In our research, we discovered that the pigeon's brain receives a signal from its middle ear that the brain then processes to determine both their direction and the strength of the magnetic field.

在我们的调研中，我们发现，鸽子的脑部接受来自中耳的信号后，开始处理信息，确定鸽子的方向和磁场强度。

Previously⁵, it had been thought that it was the bird's beak⁶ that held the answer. But this has since been proven false.

在此之前，人们认为，答案在鸟喙处。但这已经被证明是错误的了。

1 recording   

n.录音，记录

参考例句：

• How long will the recording of the song take?录下这首歌得花多少时间？
• I want to play you a recording of the rehearsal.我想给你放一下彩排的录像。

2 deteriorated   

恶化，变坏( deteriorate的过去式和过去分词 )

参考例句：

• Her health deteriorated rapidly, and she died shortly afterwards. 她的健康状况急剧恶化，不久便去世了。
• His condition steadily deteriorated. 他的病情恶化，日甚一日。

3 prematurely   

adv.过早地，贸然地

参考例句：

• She was born prematurely with poorly developed lungs. 她早产，肺部未发育健全。 来自《简明英汉词典》
• His hair was prematurely white, but his busy eyebrows were still jet-black. 他的头发已经白了，不过两道浓眉还是乌黑乌黑的。 来自辞典例句

4 navigate   

v.航行，飞行；导航，领航

参考例句：

• He was the first man to navigate the Atlantic by air.他是第一个飞越大西洋的人。
• Such boats can navigate on the Nile.这种船可以在尼罗河上航行。

5 previously   

adv.以前，先前（地）

参考例句：

• The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
• Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。

6 beak   

n.鸟嘴，茶壶嘴，钩形鼻

参考例句：

• The bird had a worm in its beak.鸟儿嘴里叼着一条虫。
• This bird employs its beak as a weapon.这种鸟用嘴作武器。