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(268) / 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(236) / 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(121) / 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(277) / 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(101) / 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(200) / 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(226) / 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(245) / 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(149) / 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(122) / 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(124) / 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(155) / 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(114) / 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(154) / 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(130) / 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(156) / 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(114) / 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(357) / 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(152) / 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(109) / 评论(0) 分类 万物简史
学英语单词
accustom to
aghful
air stuffer
American Maritime Case Law Reports
argenti picras
argument by analogy
back-scattering factor
base-load station
benign tumor of liver
billetted
calicles
cement tile
chevelles
choked jet
Codonopsis levicalyx
colour image combination device
complon (de serres 1963) complementation unit
continuous servomechanism
corbieres mts.
corive
cyberbar
deferentioepididymectomy
demartini
deontology
destructory
dewretting
EAHF
elevation sensor
eosinophilous
erection end
eupyrchcoite
eurgh
fanconi-like syndrome
fendy
fictionalization
finite duration
fixest
from all sides
go-video
governor high limit spring
grandes
gravitational clustering
have on the brain
haylife
hermann joseph mullers
hole digger
kerb-crawled
L-1210
lateral surface
line open for traffic
logical data base description
LP-safety injection pump
luxuriant
make no difficulty
make up for the costs of production
marking wave
mattest
mentha haplocalyx
mine water pollution
mission engineer
modified constant-voltage charge
Namyangbando
nodiflorus
noncausal
odd thread
onion cutter
operating frequency
oscillatron
plane polarized antenna
Polunochnoye
polycoumarone
Pospelkova
problem reduction approach
pseudoglanders
queen of diamonds
rabbitpox virus
reallowing
reference world market price
replaster
residual regression method
restauranteers
restorative control
saw grinding machine
scaredy cats
selector gene
selenium nitride
shire town
smectic-c
start all over again
surface casing shaft guide-wall
swing the ship
taken along
tellevik
The biter is bitten .
Thomas' knee splint
three axle car
thruster
traditional product
user-defined function
varsity jacket
xml data
year-on-year comparison