一鸣惊人

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(104) / 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(76) / 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(92) / 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(96) / 评论(0) 分类 火星生命

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发表于:2018-12-13 / 阅读(100) / 评论(0) 分类 加州英语分级GK

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发表于:2018-12-13 / 阅读(99) / 评论(0) 分类 加州英语分级GK

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发表于:2018-12-13 / 阅读(99) / 评论(0) 分类 加州英语分级GK

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发表于:2018-12-13 / 阅读(94) / 评论(0) 分类 加州英语分级GK

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发表于:2018-12-13 / 阅读(91) / 评论(0) 分类 加州英语分级GK

说一口流利的英语,从简单的单词开始。 听听,读读,背背,今天你的词汇量又增加了5个。 单词/词义 中英例句 单词听读 facet [ 5fAsit ] The skill with which

发表于:2018-12-30 / 阅读(88) / 评论(0) 分类 每日攻克5词

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(85) / 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(108) / 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(94) / 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(110) / 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(107) / 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(103) / 评论(0) 分类 火星生命

It happened on one of those Zip-A-Dee-Doo-Dah days Now thats the kind of day when you can't open your mouth Without a song jumping right out of it Zip-A-Dee-Doo-Dah Zip-A-Dee-A My oh my what a wonderful day Plenty of sunshine headed my way Zip-A-Dee-

发表于:2019-01-10 / 阅读(88) / 评论(0) 分类 奥斯卡最佳英文歌曲

1) Zip your lip! 闭嘴! Hey guess who has a new boyf...! 嘿,猜猜谁有了一个新男朋HEY! ZIP YOUR LIP!!!!嘿!闭嘴!

发表于:2019-02-05 / 阅读(92) / 评论(0) 分类 OMG美语

AUDIE CORNISH, HOST: When a receptionist gives you a form to fill out in a doctor's office, the questions are usually about medical issues - family history of illness, allergies or the last time you got vaccines. Some doctors are now asking more gene

发表于:2019-02-13 / 阅读(95) / 评论(0) 分类 2017年NPR美国国家公共电台8月

如果你的朋友总是喋喋不休的重复说一件事情,想必定让你的大脑备受折磨。这个时候,用一句zip your lip来表达你的不满,可谓是再合适不过了。今天我们就来学习个超级好用的英语表达。

发表于:2019-02-13 / 阅读(70) / 评论(0) 分类 卡卡课堂早餐英语
学英语单词
aeration candle
Africanises
architectural composition
Astorp
azan
b.p.r.d
bendiest
blast trauma
borica (hungary)
bottom drift
bring ... to justice
bubblejets
burn of oral cavity
capability-based addressing
cardiac branch (or cardiac nerve)
catbird seat
cavern filling
cinchonology
clandestin
concurrently
cynddylans
derailment due to climbing of wheel-flange on rail
Dicomano
diminuse
diringer
dirty realism
dissociator
do son
doing-dong fight
dottur
drupel
east schelde (oosterschelde)
electromechanical analog computer
extension line for dimension
fimbristylis subbispicata nees et mey.
for screw stays
frigid belt
go in for
Goeferdinge
guide bend test
gumboti
hollow font
horizontal pressure foot
horswertianolin
hyperepinephrinemia
intermetallic phase particle
Kummell's point
kundu
lacrimal probe
landleapers
launch velocity
licea biforis
lump-sum measure expense
maneuvering trials
marchand de vin sauce
Mborla-Dioulasso
minister to
mwhs
Niutou Bandao
nmdar
non-trivial functional dependence
notice of personal assessment
nuclear detector
orthodox straddle
out-of-order signal
outlitigated
pad supported jack-ups
passenger wharf
portable rivet forge
potassium cyanoaurite
precast artistic terrazzo flooring
promotion and transferring
quasi-stationary spectrum
radar distance meter
railway gauge
reclaimant
restless sleep
rice box
run-up
seated gas generator
selenates
self-judgment
shutoff block
silo cell
silverspears
single stage diffusion unit
singular stiffness matrix
snorkel divings
Solarians
swell scale
swing gear
tracing observation
transmission-countershaft reverse gear
trimolter
tuberostemonine
tyrement
undoed
unearthed
vaccinating
visual tuning
voltage generator
winter flowering