单词：non-dispersive infrared
单词：non-dispersive infrared 相关文章
[00:04.49]home homework [00:07.92]n.家;家乡,本国a.家庭的;家乡的,本国的 n.课外作业 [00:11.34]homeogeneou honest [00:13.77]a.同种类的,同性质的,有相同特征的 a.诚实的,正直的,老实的 [00:16.20]honesty honey hono(u)r
考研英语词汇2005
Today's topic is active voice versus passive voice. Here's Brian from Iowa: It drives me crazy when people write in passive voice. How can I teach people how to tell the difference between passive and active voice and stay away from passive voice? Th
英语语法 Grammar Girl
by Jason Marshall Lets kick things off with a bit of a strange question: If you were asked to walk up two stairs and then immediately back down three, how would you describe the total number of stairs youd climbed relative to where you began? Do any
数学英语
Senate Democrats are preparing to drop a plan to allow the near elderly to buy coverage in the Medicare program as part of their health bill. NPR's Julie Rovner has more. The so-called Medicare Buy-in would have allowed those age 55 to 64 to buy cove
2009年NPR美国国家公共电台12月
Now the technology around what the truth looks like is progressing on, the science of it. 现在的测谎技术正在日新月异地发展。 We know, for example, that we now have specialized eye trackers and infrared brain scans, 比如说，我们有
TED演讲教育篇
A volcano in Iceland had been dormant for more than 180 years. But then a few weeks ago, this started. The volcano is erupting, and some scientists say it could last for more than a year. That's about how long it went the last time this happened，th
CNN2010年(四)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Real-time information about whats happening in our bodies at the cellular level could be crucial for fighting cancer and other life-threatening conditi
Scientific American(十二)月
A planet sees what we see, a planet sees light. Danel ** director of NANA center for planet boi-sciences at tele university, and the author of a new book, what a planet knows?. so he takes someone who is completely blind and by observe in some way gi
Scientific American(六)月
Where Do Rainbows Come From? Throughout history, rainbows have been a source of mystery and legend. Rainbows are also important symbols in a number of cultures around the world. In the Old Testament o
有声英文阅读
Grammar Girl here. I'm on vacation this week, but before I left I updated one of the early episodes that I took down a few months ago. I hope you enjoy this new and improved version. Today's topic is addictive versus addicting, and we'll get to use a
英语语法 Grammar Girl
中国船只搜寻失踪航班 SOUTH CHINA SEA, March 10 (Xinhua) -- Two rescue vessels sent by the Ministry of Transport (MOT) will conduct parallel search works for the missing Malaysia Airlines flight, said command authorities on Monday. Rescue ve
英语新闻
This podcast is brought to you by the American Chemical Society. The global challenges chemistry solutions podcast from ACS discusses how chemistry research is critical in solving some of the world's most daunting problems, concerning energy, food an
Scientific American(十一)月
There was a day, about 10 years ago, when I asked a friend to hold a baby dinosaur robot upside down. 大概10年前的一天，我让一个朋友头朝下地握持一个小恐龙机器人。 It was this toy called a Pleo that I had ordered, and I wa
TED演讲科技篇
By Jim Malone Washington 01 February 2007 Senator Joe Biden of Delaware is the latest Democrat to join the race for president in 2008. But Biden already finds himself on the defensive over some comments he made about one of his rivals, Illinois Sena
2007年VOA标准英语（二月）
Sylvia: How would you like to take my sister, Donna, to the movies this weekend? Youd be doing me a favor. Joon: Why? Whats wrong with her? Sylvia: Nothing is wrong with her! She just broke up with her boyfriend of four years and shes down in the dum
地道美语播客
A new UK passport design was launched Tuesday with tougher security measures - but immediately sparked a sexism row. 英国新版护照的设计图周二（11月3日）发布，安全措施更严格，却立刻引发了一场性别歧视口水战。
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Experts say that some of our most innocent habits could induce serious damage to our skin. With these little shifts, you'll outsmart them all and stay smooth and lovely. 专家告诉我们，一些我们平时经常忽视的生活习惯也能减少对皮
趣味英语
You may have thought all superyachts were created equal. But according to one designer, there is a gap in the market for vessels targeted at the fairer sex. 也许你会觉得超级游艇的建造不分性别，但据一位设计师表示，市场上针
阅读空间
Malaria killed 435,000 people last year, most of them in Africa. 去年435,000人死于疟疾，其中大部分在非洲。 The parasite that causes the illness is carried by females of some, but not all, species of mosquitoes of the genus Anopheles.
经济学人科技系列
China on track to 12 operational J-20stealth fighters in 2017 for airpower edge over other countries in Asia 中国计划在2017年部署12架J-20隐身战机以取得对其他亚洲国家的空中优势 In July 2016,the Chengdu Aircraft Corporation
英语新闻