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听力文摘:辩论术/ 法医学
Forensics 辩论术/ 法医学 A murder has been committed. The scene of the crime is a secluded area. There were no witnesses, and the body is considerably decayed. 有一场凶手案。凶案现场是一个隐蔽的地方,没有目击证人,尸体
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听力文摘:有机污染物
Organic Pollutants 有机污染物 Yes,eating organic foods is a great way to reduce the amount of pollutants in your body, but you can't entirely escape pollution, no matter where you live. 选择有机食物大大减少了污染物进入体内,但是
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听力文摘:日光浴床安全吗?
Are Tanning Beds Safe? 日光浴床安全吗? Millions of people go to tanning salons, some to get a base tan before they go away on a beach vacation. The idea of the base tan is that it will protect you from burning on your sun excursion, so that
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听力文摘:地球为什么是圆的?
Why the Earth Is Round? 地球为什么是圆的? Our never-thought to ask question for today is: Why is the earth round? Why not a cube? A cube? No, that's silly. Is it? Why? 今天,我们从未想过的问题是:地球为什么是圆的?为什
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听力文摘:品尝师们要注意啦!
Supertasters Beware! 品尝师们要注意啦! You may have heard of supertasters. These are people who, it was discovered, are carrying around extra taste buds on their tongues, making the world of eating much more intense. 你可能也听过有这样
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听力文摘:微针疗法
Microneedles 微针疗法 Female: From fluvaccines to tetanus boosters, injections are a must in modern medicine. But do they always have to make you say Ouch? 从流感疫苗到破伤风针,注射(的方式)在现代医学中是不可或缺的。
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听力文摘:电磁感应
Motional Induction 电磁感应 Last time, we talked about motional induction, a phenomenon by which the ocean generates a magnetic field. 上次,我们提到过动生电磁感应:海洋产生磁场的一种现象。 It works like this: earth has
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听力文摘:疫苗如何培育的?
Vaccine makers crack the eggshell and inject the virus into the white stuff surrounding the yolk. Then they reseal the egg, the embryo becomes infected, and the virus is allowed to copy itself trillions of times over. And they use eggs because eggs a
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听力文摘:网络多样性
Cyber-diversity 网络多样性 I'm so tired of hackers. 我讨厌黑客。 That's what happens when you have bunch of computers runing the same software. Because they share the same flaws, if you can hack into one, you can hack into them all. 如果所
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听力文摘:心动过缓
Bradycardia 心动过缓 Don: Ya?l, isn't normal heart rate somewhere between sixty to one hundred beats per minute? Ya?l,正常人的心跳次数是不是60~100次/分? Ya?l: That's right, Don. Why? 是啊。有什么问题吗? D: This would b
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听力文摘:投弹手甲虫
BombardierBeetle 投弹手甲虫 Male: Is it a beetle or some sort? 它是甲虫还是什么? Female: Right in deed.It's a bombardierbeetle.This one is an African species, but it could be found on most other continents too. 就是甲虫,它是一只
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听力文摘:克隆宠物
Cloning Pets 克隆宠物 Is animal cloning for real? I want to have my cat cloned. 动物真的可以克隆吗?我想克隆家里的猫。 Well, animal cloning technology exists, but pet cloning isn't quite there yet. And it may never be. 动物克隆
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听力文摘:流产和乳腺癌
Abortion and Breast Cancer 流产和乳腺癌 When it comes to certain hot topics, claims about what science has or hasn't proven tend to be thrown around more in the service of one position or another than anything else. 当谈到某些热点问题时
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听力文摘:星星的遗迹
The Remains of a Star 星星的遗迹 What is a black hole,anyway? Oh,come on,everyone knows what a black hole is. 黑洞是什么?拜托,大家都知道黑洞。 Do they? Everybody thinks they know because of science fiction. 他们真的知道吗
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听力文摘:植物的自我武装
Plants Arming Themselves 植物的自我武装 Ya?l: Don, imagine this scenario. You're a plant, and a butterfly lays its eggs on you. What do you do? Don,试想一下这样的情景:你是一株植物,一只蝴蝶在你的叶子上产下了很多
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