单词：microscopic dust particles
单词：microscopic dust particles 相关文章
14 环西太平洋的12个国家遭受沙尘暴侵袭 DATE=4-11-01 TITLE=SCIENCE REPORT - Asian Dust Storms BYLINE=George Grow （Start at 59
自然探索
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
2017年VOA慢速英语(四)月
[00:07.21]NASA's Stardust spacecraft has successfully deployed a device that will collect extremely small particles in space. [00:16.95]The particles are called dust. [00:19.72]They form a stream of particles that flows through our solar system. [00:
美国英语听力80篇
If you wipe a finger across a household surface that hasnt been cleaned in the last few days, chances are youll come into contact with dust. Look around and youll find the stuff everywhere, from the particles floating in a sunbeam to the fine layer o
初学者听力文摘精选
Kicking up Some Dust At first glance, dust storms do not seem very fascinating. Winds pick up fine particles from the ground, and then the air becomes thick with dust. What is interesting, though, is
有声英文阅读
At first glance, dust storms do not seem very fascinating. Winds pick up fine particles from the ground, and then the air becomes thick with dust. What is interesting, though, is that dust storms can travel across the ocean, sometimes from continent
双语有声阅读
Fabric Fights Dust Mites in Your Bed 你床上织物中的抗尘螨 Many people around the world suffer from dust-related allergies. People with allergies have trouble breathing or suffer from tightness in the chest and shortness of breath. Most alle
2015年VOA慢速英语(十)月
Juice Infused with Microscopic Particles Offers 'Unparalleled' View of Gut A new imaging technique involving a specially-prepared liquid that patients drink could help doctors better diagnose and eventually treat illnesses in the gut. The small intes
VOA标准英语2014年(七月)
New Fabric Helps Fight Dust-Related Allergies 新型面料有助于避免尘螨过敏 Many people around the world suffer from dust-related allergies, caused mainly by tiny mites that live in bed linen. Polish scientists report they have successfully
VOA标准英语2015年(十月)
MARY LOUISE KELLY, HOST: Right now in Your Health, we'll examine a different natural phenomenon that's engulfing the northwest of the country. That would be forest fires. It's an unusually bad wildfire season, and for weeks people have been breathing
2017年NPR美国国家公共电台9月
Voice 1 Thank you for joining us for todays Spotlight program. Im Mike Procter. Voice 2 And Im Rebekah Schipper. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. V
环球英语 Spotlight
Clouds, they are fluffy, white and full of mystery. Although scientist may have better handle on clouds, even they don't know at all. Because the new study can show that atmosphere gases can help clouds form in a way no one had ever considered. That'
Scientific American(二)月
Well, the story of the earth spin goes back all the way to the origin of the solar system, four and a half billion years ago. The solar system started out as a cloud of gas and dust. And these gas and dust clumped together to form the sun and the var
自然百科2009年
About 4.6 billion years ago, a great swirl of gas and dust some 15 billion miles across accumulated in space where we are now and began to aggregate. Virtually all of it99.9 percent of the mass of the solar systemwent to make the Sun. Out of the floa
万物简史
> 51 非洲沙尘暴正威胁人类生存环境 DATE=8-3-01 TITLE=ENVIRONMENT REPORT - African Dust Storms BYLINE=Cynthia Kirk （Start at 59
自然探索
At the same time a growing number of private firms have ambitions to mine precious metals from those celestial bodies, too. 同时，许多私营公司都有从那些天体中开采贵金属的野心。 One of the (many) problems that NASA and the sp
经济学人科技系列
Do you appreciate the small things in life? In physics, infinitely small things are problematic. If a structure can be infinitely divided into smaller parts, can there be such a thing as a smallest possible space or does this division go on eternally
英语听力精选进阶版
The signs are unmistakable: the eyes water, the chest heaves, the nose twitches, the body tenses, suspense builds... until finally a sneeze blasts forth, concluding the drama. It's a momentarily paralyzing experience that can seize one at almost any
英语时差8，16
Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. Or, in other words, we sneeze. Because the nose lining tends to swell when we lie down, making it even more sensitive to sneeze-causing particles,
英语时差8，16
Airplane Contrails Have you ever seen a perfectly cloudless sky? Cloudlessthat isexcept for two or three long white lines smeared across the perfect blue sky by airplanes like smudges on a pane of glass. Why do airplanes sometimes leave contrails beh
英语听力文摘 English Digest