SSS 2008-11-19
时间：2018-12-24 作者：英语课 分类：Scientific American(十一)月
This podcast is brought to you by the American Chemical Society. The global challenges chemistry solutions podcast from ACS discusses how chemistry researchers critical in solving some of the world's most daunting 1 problems, concerning energy, food and water. Go to ACS.org for more information.
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
Truth in advertising 2 is a questionable 3 concept, because it’s often self-serving to lie. Whether you’re talking about a used car salesman or a poisonous snake. No, they’re not the same thing.
In the natural world there are poisonous creatures that advertise their unpalatability with bright colors. Then there are other critters that try to protect themselves by merely mimicking 4 the bright coloration of creatures that produce nasty toxins 6—but without actually expending 7 the energy on making the toxins themselves. These mimics 8 are hoping to get by by lying about being a bad meal. But what about the beasties that really are filled with poison. Can they lie, too? Maybe save a little energy by producing a less colorful display?
Well, scientists from the U.K. say, it looks like they can’t. See, when an animal makes a toxin 5, it also makes an antitoxin to keep it from poisoning itself. And those antitoxins are usually antioxidants, which also double as pigments 9. So the more toxic 10 a critter is, the more antioxidants it needs, and the more honestly flamboyant 11 its outfit 12, results published by the Royal Society on November 19th. So next time you run into a yellow-banded poison dart 13 frog, remember, what you see is what you get.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
- They were faced with the daunting task of restoring the house.他们面临着修复房子的艰巨任务。
- Starting a new job can be a daunting prospect.开始一项新工作有时会让人望而却步。
- Can you give me any advice on getting into advertising? 你能指点我如何涉足广告业吗?
- The advertising campaign is aimed primarily at young people. 这个广告宣传运动主要是针对年轻人的。
- There are still a few questionable points in the case.这个案件还有几个疑点。
- Your argument is based on a set of questionable assumptions.你的论证建立在一套有问题的假设上。
- She's always mimicking the teachers. 她总喜欢模仿老师的言谈举止。
- The boy made us all laugh by mimicking the teacher's voice. 这男孩模仿老师的声音，逗得我们大家都笑了。 来自辞典例句
- Experts have linked this condition to a build-up of toxins in the body.专家已把这一病症与体内毒素的积累联系起来。
- Tests showed increased levels of toxin in shellfish.检验表明水生有壳动物的毒素水平提高了。
- The seas have been used as a receptacle for a range of industrial toxins. 海洋成了各种有毒工业废料的大容器。
- Most toxins are naturally excreted from the body. 大部分毒素被自然排出体外。 来自《简明英汉词典》
- The heart pumps by expending and contracting of muscle. 心脏通过收缩肌肉抽取和放出（血液）。 来自互联网
- Criminal action is an action of expending cost and then producing profit. 刑事诉讼是一种需要支付成本、能够产生收益的活动。 来自互联网
- Methods:Models were generate by CT scan,Mimics software and Abaqus software. 方法：采用CT扫描，Mimics软件和Abaqus软件的CAD进行三维有限元模型的创建。 来自互联网
- Relaxing the mind and body mimics the effect that some blood-pressure pills would have. 放松身心会产生某些降压药才能产生的效果。 来自辞典例句
- The Romans used natural pigments on their fabrics and walls. 古罗马人在织物和墙壁上使用天然颜料。 来自辞典例句
- The original white lead pigments have oxidized and turned black. 最初的白色铅质颜料氧化后变成了黑色。 来自辞典例句
- The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
- There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。
- His clothes were rather flamboyant for such a serious occasion.他的衣着在这种严肃场合太浮夸了。
- The King's flamboyant lifestyle is well known.国王的奢华生活方式是人尽皆知的。