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Because Debra had just bought a new laptop computer, she decided that she must start cutting back on some expenses if she could. Her long distance phone bill was one expense that sprang to mind. She was paying almost $30 a month to Horizon, her local

发表于:2018-12-06 / 阅读(68) / 评论(0) 分类 原版英文小故事

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(97) / 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(125) / 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(97) / 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(82) / 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(86) / 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(107) / 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(116) / 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(113) / 评论(0) 分类 火星生命

'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(80) / 评论(0) 分类 2016年NPR美国国家公共电台10月

War planes and rockets crossing paths in the sky. Right now thats part of daily life for people living in parts of Israel and Gaza. The signs of the fight maybe in the air, but the impact is on the ground. This is an office building in Gaza thats bee

发表于:2018-12-24 / 阅读(69) / 评论(0) 分类 CNN2012年(十一)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(99) / 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(124) / 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(111) / 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(127) / 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(133) / 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(133) / 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(116) / 评论(0) 分类 火星生命

The furthest distance in the world Is not between life and death But when I stand in front of you Yet you don't know that I love you 世界上最遥远的距离 不是 生与死 而是 我就站在你面前 你却不知道我爱你 The furthest dista

发表于:2019-01-08 / 阅读(109) / 评论(0) 分类 英语小短文

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(97) / 评论(0) 分类 2018年NPR美国国家公共电台4月
学英语单词
absence of radius
areametric
astatotyrosine
beastlihood
bit serial transmission
brain drains
built-in reference voltage
cancer of cheek
causal reasoning
ceiling panel
cell, concentration
cellulose acetate propionate
circumscribed quadrilateral
CISK
cleated eccentric roller
coal-genetic gas
cold tandem mill
conducting end-ring
continuous soaper
cotransfers
critical strength
deflection probability
deposits received
disseminated candidiasis
endomagmatic hydrothermal differentiation
enmesh in
erecton hinge
Eucinostomus gula
exterier packaging
Fagita
flexible wheel base
foschi
gloomful
go while the going's good
government broadcasting
Gros Ventre River
gross yards
heart-heat
hexanedioic acids
hierarchic direct organization
hume cronyns
HWSR (heavy-water suspension reactor)
item by item comparison
kravets
lani
Lauro, Mte.
le misanthrope
Liantuo Formation
long-stroke diesel engine
MAC sublayer
make a clean breast of it
make a pair
marking vessel
metallic noise
Monclar-de-Quercy
moronism
multicollisional
non heritable
non-controllable connection
non-lives
non-privileged instruction
nourishing yin for lowering fire
old-world hookworm
paper ... over
person-hour
physarum stellatum
Potamogeton perfoliatus
pound centigrade unit
pulse amplitude discriminator unit
pyridine butadiene rubber
Radal
rake of tubes
realworld
receptaculum chyli
repealed ordinance
right quotient space
roast beef
rotten egg gas
set play
shower water
shufti-scope
single-tailed test
snappinghip
speak ill of somebody
special-interest
speciational evolution
star-blind
straddling bus
straight-line relationship
strap-wound coil
struthionidaes
this kind of
trubschachen
twelfth grade
unconfessing
unenamour'd
uterovaginal primordium
velcro-jump
vertex connectivity
weather plane
window area
Zermelo recurrence paradox