英语听力：自然百科 探索世界奥秘之Life Story(生命物语) Unit5

探索世界奥秘之Life Story(生命物语) Unit5

They are heart cells, and several million of them working at once is a heartbeat. In this case, it's your head that rules your heart as it's your brain that decides what rate your heart should be beating at. The same part of your brain that's controlling your heart is looking after the outside of you, too. Your body needs to maintain a constant temperature of 37 degrees centigrade and your brain has a range of tricks up its sleeve to do it. 

This is skin magnified a thousand times. If you look closely, it's covered in holes. They are the openings of tiny ducts--tubes through which sweat can flow. There are about 65, 000 of them on the palm of your hand alone. If you are getting too hot, your brain switches on your sweat glands¹. As the sweat evaporates, it will help cool you down. And should your brain decide that staying warm is what's needed, it's got another plan, goose pimples². They trap warm air near to the skin and so keep vital heat in. 

so all that is being controlled from here inside your head. And don't think you will get out of all the hard work by nodding off. Even when we are completely relaxed or asleep our brains don't let up. This strange contraption is covered in electrodes picking up part of my own brain's activity. 128 sensors³ detect tiny signals emitted as my brain cells fire. This is the pattern produced when I'm relaxed. Even without a thought in my head, my brainwaves show I'm busy. The truth is our bodies are always busy. They just don't tell us about it. What we see as the monotony of our daily lives when it seems that nothing ever really happens...

words and expressions

have sth. up one's sleeve暗中已有应急的打算；心 中有妙计 (= keep sth. up one's sleeve)

duct:Anatomy A tubular bodily canal or passage, especially one for carrying a glandular⁴ secretion:【解剖学】 管：管状体内通道，尤指运输腺分泌物的管道：

a tear duct.

泪管

switch on:接通

goose pimples: n.(=goose flesh)小疙瘩

nod off:打盹

let up:v.停止, 中止, 放松

contraption: A mechanical device; a gadget⁵.一种机械装置；小机件

monotony: Tedious sameness or repetitiousness:毫无变化或单调的重复：

the monotony of daily routine.

一成不变的例行日常公事

1 glands   

n.腺( gland的名词复数 )

参考例句：

• a snake's poison glands 蛇的毒腺
• the sebaceous glands in the skin 皮脂腺

2 pimples   

n.丘疹，粉刺，小脓疱( pimple的名词复数 )

参考例句：

• It gave me goose pimples just to think about it. 只是想到它我就起鸡皮疙瘩。
• His face has now broken out in pimples. 他脸上突然起了丘疹。 来自《简明英汉词典》

3 sensors   

n.传感器，灵敏元件( sensor的名词复数 )

参考例句：

• There were more than 2000 sensors here. 这里装有两千多个灵敏元件。 来自《简明英汉词典》
• Significant changes have been noted where sensors were exposed to trichloride. 当传感器暴露在三氯化物中时，有很大变化。 来自辞典例句

4 glandular   

adj.腺体的

参考例句：

• Terry has been laid low with glandular fever for nearly a month now.特里由于功能性高烧已卧床近一个月了。
• A malignant tumor originating in glandular tissue.腺癌起源于腺性组织的恶性肿瘤。

5 gadget   

n.小巧的机械，精巧的装置，小玩意儿

参考例句：

• This gadget isn't much good.这小机械没什么用处。
• She has invented a nifty little gadget for undoing stubborn nuts and bolts.她发明了一种灵巧的小工具用来松开紧固的螺母和螺栓。