太阳大气

诸多线索综合起来为我们描绘出一幅画面:那是火星遥远的过去,那时的火星还有着一层厚厚的大气层,令这颗星球温热暖和,从而使水能够在火星表面流淌。但如今,地表的水消失不见,而

发表于:2018-12-07 / 阅读(204) / 评论(0) 分类 60秒科学

VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Shirley Griffith with EXPLORATIONS in VOA Special English. This week, we hear some unusual sounds from space. Scientists created them by taking radio wave observations and turning them into sound waves

发表于:2018-12-15 / 阅读(151) / 评论(0) 分类 VOA慢速英语2008年(一)月

What Are Solar Tornadoes? Large, Earth bound tornadoes are pretty impressive weather events. Those dark, giant funnel clouds inspire much awe and fear. But theyre nothing compared to so called solar tornadoes solar gases swirling in monstrous formati

发表于:2018-12-31 / 阅读(155) / 评论(0) 分类 英语听力文摘 English Digest

DEVELOPMENT REPORT – How to Make a Solar Water Heater By Gary Garriott Broadcast: Monday, November 29, 2004 I'm Gwen Outen with the VOA Special English Development Report. Solar water heaters save o

发表于:2019-01-02 / 阅读(307) / 评论(0) 分类 农业与发展

Scientists in developing nations are considering ways to limit the effects of climate change on Earth. These scientists plan to explore one possibility: controlling or restricting sunshine levels. They want to see if use of a man-made chemical to blo

发表于:2019-01-03 / 阅读(194) / 评论(0) 分类 2018年VOA慢速英语(四)月

-Im Chris Kaufman and I here with Justin Kasper, who works at Smithsonian, hes an astrophysicist at the Smithsonian. And he's won a project thats gonna launch a probe at the sun, specifically the Solar Wind Electrons Alphas and Protons investigation,

发表于:2019-01-07 / 阅读(210) / 评论(0) 分类 万花筒2013年

The clues are adding up to give a picture of a distant Martian past, when the planet had a thick atmosphere that was warm enough for water to stream on the surface. But now the waters gone, and the atmosphere is so thin that any water would boil away

发表于:2019-01-08 / 阅读(203) / 评论(0) 分类 Scientific American(十)月

AS IT IS 2013-06-14 NASA Scientists Still Dream of, and Plan for, Human Travel to Mars From VOA Learning English, this is As It Is. Welcome back. Im Caty Weaver. On the show today, we look into the future of space exploration. The American space agen

发表于:2019-01-12 / 阅读(165) / 评论(0) 分类 2013年VOA慢速英语(六)月

Juno Spacecraft Enters Jupiter Orbit 朱诺号探测器进入木星轨道 American scientists cheered loudly as their spacecraft, called Juno, entered Jupiters orbit Monday night. Juno, welcome to Jupiter! The scientists are with the U.S. space agenc

发表于:2019-01-12 / 阅读(142) / 评论(0) 分类 2016年VOA慢速英语(七)月

By Paul Sisco Washington, D.C. 19 July 2007 Silicon Valley in northern California originally referred to the corporate homes of silicon chip innovators and manufacturers, and the high tech businesses in the San Francisco Bay area. Today that region i

发表于:2019-01-12 / 阅读(275) / 评论(0) 分类 2007年VOA标准英语(七月)

By Katherine Cole Washington 25 July 2007 The city of Taos, New Mexico, was known as the Solar Capitol of the World long before then-Governor Gary Johnson officially made that declaration in 1997. The high desert altitude of over two kilometers and c

发表于:2019-01-12 / 阅读(257) / 评论(0) 分类 2007年VOA标准英语(七月)

India seems to excel at making things smaller and cheaper. The $2,500 car and the $35 computer are just two of the country's latest innovations. Now, India increasingly is focused on low-cost solar technology. The front lines of that effort are seen

发表于:2019-01-14 / 阅读(190) / 评论(0) 分类 VOA标准英语2010年(十)月

Our planet was spared this fate. The magnetic field generated by the Earths core blocked the solar wind, preventing it from blasting away the fragile air. But the Earths atmosphere was still very different from the one we breathe today. It contained

发表于:2019-01-23 / 阅读(160) / 评论(0) 分类 探索与发现2014年

To discover why these twin planets followed separate paths and to explore what gave us our precious atmosphere, we have to travel back, back four and a half billion years to the birth of the solar system itself. The birth of the solar system created

发表于:2019-01-23 / 阅读(149) / 评论(0) 分类 探索与发现2014年

Thursday ' s Solar Eclipse Should Provide Dramatic View David McAlary Washington 20 Jun 2001 02:44 UTC The first 1)solar eclipse of the new millenium occurs Thursday, June 21. It will give millions of

发表于:2019-01-31 / 阅读(223) / 评论(0) 分类 VOA2001-国际风云(1)

By Jessica Berman Washington 19 March 2008 For the first time ever, astronomers using the Hubble space telescope have discovered the presence of the organic molecule methane in the atmosphere around a planet outside our solar system. While astronomer

发表于:2019-01-31 / 阅读(158) / 评论(0) 分类 VOA标准英语2008年(三月)

By Paul Sisco Washington 22 October 2007 Twenty college and university teams from around the world competed inthe recentSolar Decathlon that is held every two years in Washington, D.C. The U.S. Energy Department sponsors the event, and this year's wi

发表于:2019-02-04 / 阅读(182) / 评论(0) 分类 2007年VOA常速英语(十月)

You never guess the dangers on the ground from orbit, except maybe for this, massive, double-barreled storms hovering above the poles. Of this, what we called dipole features trailing around, we don't know what, really what they are, but the whole fe

发表于:2019-02-15 / 阅读(256) / 评论(0) 分类 自然百科2012年

From VOA Learning English, this is As It Is. Welcome back. Im Caty Weaver. On the show today, we look into the future of space exploration. The American space agency NASA has announced plans for a new effort to study the sun. And, NASA scientists are

发表于:2019-02-16 / 阅读(184) / 评论(0) 分类 英语语言学习

Science and technology 科学技术 Solar power from space 太空太阳能 Beam it down, Scotty 老兄,传下来吧 Harvesting solar power in space, for use on Earth, comes a step closer to reality 在太空获取太阳能以供地球之用:梦想距

发表于:2019-02-16 / 阅读(216) / 评论(0) 分类 经济学人科技系列
学英语单词
act of defence
actual eviction
anthracobunid
aristolochiaceaes
atmosphile element
backed bond
Binaur
borrelial
broho
bull's-eye rot
burette meniscus reader
Caesalpinia hymenocarpa
cedar birds
cetuss
charge discriminator unit
charismatic leadership
childbirth
chirkiest
Christed
conniveth
constructive possessions
continent making movement
damage saturation
data scaling
degree of terrain irregularity
depletion drive
design methodology
diaphragm rivet
Dicrocoaliidae
die approach angle
diphenyl propane
Dirichlet principle
dispersing element
dizamn
Dong Zhongshu
drug anaphylactic reaction
episodick
exhaust dust device
factiose
fellowess
flat slab
for laughs
forisfactus
gamma-ray emission
get mixed up with
ginkgoic acid
gokstads
government official
haslet
Hasse graph
heading record
healthinsurance
healthy stream
heat super
hedrumite
high early strength Portland cement
inertial gradiometry
integral number of times
Ishihara's tests
isoacorone
langers
least reading
Lugny
martial-laws
Messenian
Neo-Naclex
Netherbury
on this
Parabarium linearicarpum
philosophical thinking
plate with
postvulcanization
power shopping
racking of rubber
re-answer
respet
reversing operation
revvable
rising anvil
rocheleau
Scharnitz
self-saturation
serviceability limitation
Sierra salvia
simplified approach
single loop
sonar buoy
special purpose lighter
tactile feedback device
tax shelter
telescope sight
the great proletarian cultural revolution
treatment scene
tropical soil
Tyndall scattering
unimaginary
Viola lactiflora
voluntary settlement
wale deflection
wellsinker
white spruces
xylylenediamine