音标:[ˈdʒaiərəu həˈraizən] ;
陀螺地平仪
词型变化:名词复数形式 : gyro horizons
【近义词】

Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.

发表于:2018-12-07 / 阅读(66) / 评论(0) 分类 火星生命

These discoveries raised the stakes. Here was a planet similar to our own. Mars might not have cities or civilizations. But it could be home to other smaller life forms like microbes. Chris McKay is N

发表于:2018-12-07 / 阅读(93) / 评论(0) 分类 火星生命

I think it is exciting. Because it would imply that if life arose independently on Mars. The implication is that life is pervasive throughout the universe. This is why Mars has so obsessed scientists.

发表于:2018-12-07 / 阅读(73) / 评论(0) 分类 火星生命

In 2001 a new NASA probe was launched. Called Odyssey, it was sent to Mars to carry out the most detailed analysis ever of the planet’s surface. What it has discovered may be about to answer one of

发表于:2018-12-07 / 阅读(54) / 评论(0) 分类 火星生命

But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

发表于:2018-12-07 / 阅读(65) / 评论(0) 分类 火星生命

Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u

发表于:2018-12-07 / 阅读(70) / 评论(0) 分类 火星生命

For Mars to have rivers, it must once have had streams, rain, clouds and an atmosphere, a planet just like the Earth today-if these were rivers. They had to be sure. The answers would come in 1998 wit

发表于:2018-12-07 / 阅读(80) / 评论(0) 分类 火星生命

William Boynton is professor of planetary sciences at the University of Arizona. And he's dedicated his life to looking for water on Mars. The link between life and water is very strong. Even here in

发表于:2018-12-07 / 阅读(91) / 评论(0) 分类 火星生命

Keeping Washington DC Airspace Safe Is Tall Order 保持华盛顿领空安全是艰巨的任务 WASHINGTON Being the home of all three branches of the U.S. federal government makes Washington, D.C., the prime target for those who want to make their m

发表于:2018-12-16 / 阅读(55) / 评论(0) 分类 VOA标准英语2015年(四月)

'Deepwater Horizon' Honors The Sacrifice Without Sacrificing The Action play pause stop mute unmute max volume 00:0003:02repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update you

发表于:2018-12-18 / 阅读(55) / 评论(0) 分类 2016年NPR美国国家公共电台10月

保持华盛顿领空安全并非易事 Being the home of all three branches of the U.S. federal government makes Washington, D.C., the prime target for those who want to make their messages and ideas heard. Unfortunately, many of them choose to deli

发表于:2018-12-19 / 阅读(71) / 评论(0) 分类 VOA双语新闻 2015年4月

AMERICAN MOSAIC - Are You Ready for Gyrotonics?By Dana Demange and Nancy Steinbach Broadcast: Friday, February 24, 2006 (MUSIC) HOST: Welcome to AMERICAN MOSAIC, in VOA Special English. (MUSIC) I'm Do

发表于:2019-01-02 / 阅读(103) / 评论(0) 分类 2006年慢速英语(二)月

Of course, any terraforming is still a long way off. The next few expeditions to Mars will definitely be made by machines. NASA, are sending 2 rovers, capable of travelling over 100 meters a day in se

发表于:2019-01-02 / 阅读(79) / 评论(0) 分类 火星生命

Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t

发表于:2019-01-02 / 阅读(102) / 评论(0) 分类 火星生命

Life on Earth is basically proteins and DNA, so we can wonder if there is life on Mars will also be DNA and proteins, the same type of DNA, the same type of proteins. One might think that DNA is such

发表于:2019-01-02 / 阅读(89) / 评论(0) 分类 火星生命

But there was something even better. Odyssey may not just have found ice. There may also be liquid water, and that means, there could be living creatures there too. Right now, there might be liquid wa

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 火星生命

But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch

发表于:2019-01-02 / 阅读(102) / 评论(0) 分类 火星生命

The ground here is permafrost, a mixture of soil and ice frozen together. A group of Russian scientists have teamed up with NASA to drill down into it in search of microorganisms. It's work that's bee

发表于:2019-01-02 / 阅读(100) / 评论(0) 分类 火星生命

One of these wavelengths corresponds to hydrogen, another wavelength would be iron. Another wavelength would be oxygen. And so you go to the part of the spectrum you are interested in and you see you'

发表于:2019-01-02 / 阅读(97) / 评论(0) 分类 火星生命

RACHEL MARTIN, HOST: Eight years ago today, an explosion on the Deepwater Horizon drilling rig killed 11 people and led to a massive oil spill in the Gulf of Mexico. The accident prompted big changes in how the country regulates offshore drilling. No

发表于:2019-01-16 / 阅读(68) / 评论(0) 分类 2018年NPR美国国家公共电台4月
学英语单词
abdul-mejid i
acantharia chaetomoides
accept for
air medical quarantine station
ambitious
arenaria takasagomontana
armorplate glass
Arthropoma
ascry
bankers' association
Barkeyville
billericas
break sb of smoking
capacitance law tolerance
capital loans
cartologist
cationic polyelectrolyte
certified cheques
chateau-bottled socialist
cholesterol compound
combined quantity
Corpus maxillae
cranking enrichment
crystalline melting point
curved quadrangle
diaonidia cinnamomi
dirl butter
ectogeny
elaeagnoides
Eleutherius, Saint
Embioptera
facial contacted wire rope
family gentianaceaes
fender beam
flat-topping
flatbed trailer
fluoroimmunoassays
freezing level
genus Paleacrita
gluiness
high-speed test
human language technologies
hypertrophic lupus
immunovirology
infundibular stenosis
inorganic dissolved component
kokoda
longitudinal dam
loose scale
lyoniums
make up
mapped storage
Meehania pinfaensis
meridianal parts
mold fitter
no bargain
non-zero-sum game policy
nonrelativistic approximation
nonspheres
nonvenomous
ntsb
oinochoe
olliest
one's complement code
one-particle irreducible diagram
orchella
pale resin
pilot spotting telescope
plant mites
polysacharide
postthrombotic
quality control of food
queebs
receiving transducer of ultrasonics
ritanserin
Rolling EPS
root harvester
rothas
runround
Salix heterochroma
Samgar-nebo
sampling camera
shell plate development
shoring-ups
signal-to-background
Siuruanjoki
Skibbild
spacer region
spare wheel
specialty shop
spirostichies
strong packing
subarctic convergence
swing-bridge
Sφnderjylland Amt
tape speed
TORTOS
unshepherded
unshield twisted pair
user defined message
warning blinker
woolly thistle