波兰工程师研发空气净化设备

From VOA Learning English, this is the Health Lifestyle report. From Asia to Europe to North America, poor air quality is making people sick and, in some cases, killing them at an early age. Air pollution causes six million premature deaths every yea

SSS 2011-02-17

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Usually, we trust common sense to solve problems. Is a runny mixture too thick? Add some fluid. Thatll make it runnier. Except when the fluid makes it th

美国英语听力80篇2 Lesson31

[00:06.97]An Israeli study has shown that air pollution from cities and industry can reduce rain and snowfall. [00:17.53]It says the problem appears to be linked to the number of pollution particles in clouds. [00:24.82]Daniel Rosenfeld of Hebrew Uni

英语四级听力考试练习题Model Test Five

[00:00.00]1.W:I think I'll take my mother to that French restaurant on Main Street for her birthda [00:08.15]M:I hope it's not any time soon.They are usually booked up weeks in advanc [00:14.37]Q:What does the man mean? [00:18.44]2.M:Did you notice t

SSS 2008-11-18

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. In theory, scientists could learn a lot about our health by testing tiny amounts of bodily fluidsa drop of blood, a tear, a bead of sweat. But somethin

SSS 2008-02-04

This is Scientific Americans' 60-Second Science. I'm Chelsea Wald. Got a minute? Vinaigrette dressing: when you shake it little vinegar droplets scatter through the oil, but when you put it down, the droplets merge and the dressing separates. That's

SSS 2009-07-21

This is Scientific American's 60-Second Science. I'm Karen Hopkin . This will just take a minute. When you get caught in a downpour, you probably dont think about the size of the raindrops that assault you as you run for cover. But physicists do. And

SSS 2009-04-02

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The common method of closing a surgical incision is simply to stitch the patient up. There are some issues, though. Good stitching can be challenging,

SSS 2009-06-15

This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Could it be that our understanding of rain was all wet? A new study says that some drops of rain are falling faster than they should be. Which ultimately means that it m

SSS 2010-01-12

If youve ever had a garden or grown flowers in a window box, youve probably heard that you shouldnt water your plants at high noon because their leaves might scorch. Now a study in a journal called New Phytologist confirms that water droplets can foc

与美国小学生一起学英文第7册 第1期:云

Cloud 云 A cloud is a massive droplets in the sky. 云是天空中大量的小水滴。 When the sun heats up the Earth, water on the Earth evaporates and becomes a cloud. 地球受到太阳的烘烤时，地球上的水就会蒸发并凝结成云。

VOA慢速英语 2007 1003a

This is the VOA Special English Health Report. Scientists continue to look for ways to deal with the deadly form of bird flu virus. Medical workers care for a bird flu patient in Medan, Indonesia, last year Researchers in Singapore, for example, hav

英语四级阅读猜词必备技巧(3)

在英语学习中，我们自然会遇到许多生词。这时，许多人立即翻阅字典，查找词义。其实，这种做法是不科学的。它不但费时费力，而且影响阅读速度。事实上，阅读材料中的每个词与它前后

一次咳嗽会产生2万个病毒

一次咳嗽会产生2万个病毒 The next time you cough or sneeze, there is good reason to cover your mouth. As many as 20,000 viruses are expelled in an average cough, which may be sufficient to infect many people - particularly those who are not

中国首例MERS患者背后的故事

On May 29, the Chinese public was put on alert by a notice issued by the National Health and Family Planning Commission. 5月29日，国家计生委的一条消息让中国民众警觉起来。 It was about Chinas first case of Middle East respirator

CNN 2008-05-14

Special Thanks to Nativespeaker and jacobs613 Good afternoon from the CNN Center in Atlanta, I'm Raggie Aqui. Here's a look at what's happening NOW IN THE NEWS. China says it's going to welcome international aid, but for now, relief workers from oth

经济学人236:金属,自己愈合吧 Metal,heal thyself

Metal, heal thyself 金属，自己愈合吧 Materials science: Researchers have devised an ingenious way for the damaged surfaces of metals to repair themselves when they come to harm 材料科学：研究人员构想出了一种新颖独特的方法，

英语美文：“血染”的启示

几年前,安妮塔送给我一套西装,让我惊喜了一番。这套西装好看又时尚,不管你相信与否,穿着这套衣服让我看起来非常帅气潇洒。至少,在我把鲜血染在它上面之前,确实如此。 A few years ago Anita

翻唱歌曲：Gabrielle&Lewis 翻唱《Droplets》

英伦民谣才女 Gabrielle Aplin 助阵唱作歌手 Lewis Watson，新单《Droplets》温馨动画MV！这首歌翻唱自 Colbie Caillat 和 Jason Reeve 的同名作品，充满正能量，非常好听。 歌词： I'm leaving you, not sure if tha

美不胜收 澳大利亚现罕见雨幡洞云

Amazing photographs have emerged capturing one of the skys rarer sights a cloud formation known as a fallstreak hole. 这些精彩照片拍下了一种罕见的天象雨幡洞云。 Also known as a hole punch cloud the unusual occurrence, which appea