地球大气

Without air, there would be no fire. There would be no cars or trucks, since motors need air in order to work. Without air, there would be no wind or clouds. There would be no weather, as we know it.(

发表于:2018-12-01 / 阅读(194) / 评论(0) 分类 自考英语(一)78讲

[00:00.00]When the spaceship was doing its seventh circle [00:03.54]Yang Liwei showed the flags of China [00:05.67]and the United Nations, [00:07.43]expressing the wishes of the Chinese people [00:09.64]to explore and use space peacefully. [00:13.21]

发表于:2018-12-04 / 阅读(191) / 评论(0) 分类 北师大版高中英语模块1

[00:02.25]第八单元 课文A [00:04.49]Telecommunication via Satellite [00:06.71]卫星通信 [00:08.93]At the beginning of the twentieth century, [00:11.31]20世纪初 [00:13.69]there were four powerful means of transmitting and receiving information [00:17.37

发表于:2018-12-04 / 阅读(67) / 评论(0) 分类 大学英语自学教程上

Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(208) / 评论(0) 分类 (科普英语)Earth and Sky

The Earth's Biggest Threat 地球危机──温室效应 by Levi King Global warming was once considered unlikely to be real. Recently, though, it has become widely accepted as fact. Scientists have calculated that the earth's atmosphere has gotten

发表于:2018-12-08 / 阅读(56) / 评论(0) 分类 常春藤解析英语

[00:04.53]Unit 22 Environmental Protection [00:08.85]Lesson 1 Global Warming [00:12.39]Can we take the heat?In the last few decades, [00:16.95]environmentalists have reported [00:19.02]that human beings are causing changes [00:22.29]in the Earth's cl

发表于:2018-12-13 / 阅读(145) / 评论(0) 分类 北师大版高中英语模块8(选修)

Forests and CO2 森林和二氧化碳 The amount of fossil fuel emissions released into the atmosphere has steadily risen since the Industrial Revolution. But recently, part of those emissions have been disappearing. Learn more about forests and CO2 -- on

发表于:2019-01-02 / 阅读(163) / 评论(0) 分类 (科普英语)Earth and Sky

Aqua Technology 水资源监测科技 A new weather-monitoring satellite has been 30 years in the making, and some researchers think it's worth the wait. We'll speak with a scientist about the Aqua satellite -- on today's Earth and Sky. DB: This is Earth a

发表于:2019-01-02 / 阅读(158) / 评论(0) 分类 (科普英语)Earth and Sky

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. About a billion years from now, some scientists say, the sun will be too bright for comfort, and our formerly hospitable planet will no longer be able to

发表于:2019-01-08 / 阅读(99) / 评论(0) 分类 Scientific American(六)月

How Does One Find a Meteorite? 如何找到陨石? Editor's Note: The annual Perseid meteor shower will peak in the skies over Earth on the night of Aug. 12-13. Despite a bright moon supermoon, there should still be a good show from this prolific sho

发表于:2019-01-12 / 阅读(66) / 评论(0) 分类 2014年VOA慢速英语(八)月

PlummetingUSSatellitetoHitEarthFriday NASA launched the Upper Atmosphere Research Satellite (UARS) 20 years ago this month. And now that bus-sized satellite is plunging toward Earth. Mark Matney, an orbital debris scientist at NASA's Johnson Space Ce

发表于:2019-01-13 / 阅读(67) / 评论(0) 分类 VOA标准英语2011年(九月)

Hubble's Gaze Extends to Edges of Universe Ever since the days of Galileo and the first optical telescopes more than 400 years ago, astronomers have been looking for ways to cast their gaze farther into the heavens around us. Today, thanks to the ear

发表于:2019-01-14 / 阅读(89) / 评论(0) 分类 VOA标准英语2011年(八月)

I want to talk about 4.6 billion years of history in 18 minutes. That's 300 million years per minute. Let's start with the first photograph NASA obtained of planet Mars. This is fly-by, Mariner IV. It was taken in 1965. When this picture appeared, th

发表于:2019-01-18 / 阅读(69) / 评论(0) 分类 英语演讲

LOS ANGELES, June 24 (Xinhua) -- Near-Earth asteroid 2011 MD will whip past Earth on June 27, but will not pose any threat, NASA's Jet Propulsion Laboratory (JPL) said on Friday. The asteroid will pass only 12,000 kilometers (7,500 miles) above the E

发表于:2019-01-20 / 阅读(108) / 评论(0) 分类 英语新闻

Blockson's computer model reveals that at the South Atlantic Anomaly, the magnetic field isn't just weaker than anywhere else on the planet. It's actually reversed polarity. There is a patch on the core in the South Atlantic where things are not poin

发表于:2019-01-22 / 阅读(84) / 评论(0) 分类 自然百科2011年

Earth's Fried Far-Future Postponed A study in the Proceedings of the National Academy of Sciences adds at least a billion years to the already far-future estimate of when the sun will make Earth too hot to handle. Karen Hopkin reports. [The followin

发表于:2019-01-30 / 阅读(105) / 评论(0) 分类 60秒科学

EXPLORATIONS - Venus Express Spacecraft Explores Earth's Mysterious Sister PlanetBy Mario Ritter and Daniel Kirch Broadcast: Wednesday, May 10, 2006 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: And

发表于:2019-01-30 / 阅读(64) / 评论(0) 分类 2006年慢速英语(五)月

25 大气层中臭氧正日渐稀薄 DATE=3-21-01 TITLE=SCIENCE REPORT - (1)Springtime Ozone Loss BYLINE=George Grow (Start at 1'00

发表于:2019-01-30 / 阅读(299) / 评论(0) 分类 科技之光

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(86) / 评论(0) 分类 VOA2001-国际风云(1)

Chicxulub is buried under two to three kilometers of limestone and mostly offshore, 奇克休留布大坑在两三公里的灰岩深处,而且大部分在近海。 which makes it difficult to study, Anderson went on, while Manson is really quite ac

发表于:2019-02-25 / 阅读(67) / 评论(0) 分类 万物简史
学英语单词
absolute algebraic number field
alloxydim
arrangement factor
assume the position
Beaver Inlet
belleisle
biotic dependent factor
bodhisattva vows
C-channel
cisgenderism
clumpier
cockal
cockandy
codirections
composite seismogram
copoda
credit for export on a consignment basis
curve deficiency
cytopoiesis
date stone
densograph
door-bar
earth-sizer
effulgence
ELDO
emissary
estimatory
eucaryon
eulophid
excantation
fasoracetam
field apparatus for ground photogrammetry
field effect transistor (fet)
first-level statement
flight information (region)
footer sample
fuelizer
Fullerboard
golden formula
hacks on
high day
Hydrosaluret
hydrozincite
imposturing
instinct for
knawed
lanskoi
long-range business plan
looking up to
lues congenita
Marshallton
message originating medium
Mudiwa
Nesflaten
nitration acid heat test
nursery-grown plant
objective cause
ohly
parencephalous
parkward
patch test of paints on ship hull
perimeter disturb test
physical file member
physicochemical properties
phytotaxonomy
pincet
Pirogoff's operation
pixel-to-pixel
preakar
Procainamide-Induced
process header slots
production time study
pumpellyites
radiation moisture measurement
regular covering space
rhinoreaction
Romer
rudder kick
Satui
scyphomeduase
secretarys
sermonizings
sodium dimercaptopropane sulfonate
ST_right-and-wrong_being-suitable-or-unsuitable
stacked-dipole antenna
sweet clover poisoning
ten-fifteen
Thames Yacht Club
the EU
theory of market behavior
Thomson circulation theorem
Tioctan
tow forward
trundled
trust inter-fund transaction
untrademarked
vena cerebris
volume-weight
wave-built structure
webtoed
wilker
within sound of