红外地平传感器,红外地平仪

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(196) / 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(189) / 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(190) / 评论(0) 分类 火星生命

Voice 1 Thank you for joining us for Spotlight! Im Ryan Geertsma. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Fires like this

发表于:2018-12-19 / 阅读(169) / 评论(0) 分类 环球英语 Spotlight

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Real-time information about whats happening in our bodies at the cellular level could be crucial for fighting cancer and other life-threatening conditi

发表于:2018-12-24 / 阅读(185) / 评论(0) 分类 Scientific American(十二)月

One of the most exquisite heat sensors in the worldits not in some government lab. It's in the head of a snake. The pit viper, to be specific. They're incredibly sensitive. They beat any of the synthetic counterparts, even the most expensive semicond

发表于:2018-12-24 / 阅读(173) / 评论(0) 分类 2017年Scientific American(二)月

Very roomy. For a single-seat fighter it's spacious. Plenty of room to lay out stuff we carry with us. The nose is cut and you won't see any perpendicular surfaces go around. The four probes in the front are not machine guns. And they are not hologra

发表于:2018-12-30 / 阅读(184) / 评论(0) 分类 国家地理2007年

May: Oh, Mom, do you know where the liquid soap is? Mom: Right here, in that beautiful bottle. Push the button, you'll get it. May: Oh, Mom, you can use the wipe. It smells sweet. Mom: That's OK. I prefer the hand-dryer. Oh, where is the switch? May:

发表于:2018-12-31 / 阅读(185) / 评论(0) 分类 英语大赢家下册

Captain, you wanted to see me? 上尉,你找我 Dai tells me that you're doing a fair job of taking over for Scott. He did? 戴告诉我你在找人接手斯科特的工作。是吗 I can only hope he's right. 我只能希望他是对的 We think t

发表于:2019-01-01 / 阅读(188) / 评论(0) 分类 陨落星辰第二季

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(191) / 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(219) / 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(213) / 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(204) / 评论(0) 分类 火星生命

在宾馆的洗手间里,妈妈和阿美碰到一些小问题,干手器坏了。到底怎么解决呢? Listen Read Learn May: Oh, Mom, do you know where the liquid soap is? Mom: Right here, in that beautiful bottle. Push the button, you'll get it. May: Oh, Mom, you can use the w

发表于:2019-01-11 / 阅读(187) / 评论(0) 分类 英语口语大赢家

Hearing Aid Common in Europe Turns Up Volume in US More than 10 percent of Americans have some form of hearing loss. Even with a hearing aid, deciphering sounds in places like airports, theaters and places of worship can be tough. However, a not-so-n

发表于:2019-01-13 / 阅读(178) / 评论(0) 分类 VOA标准英语2011年(十二月)

There was a day, about 10 years ago, when I asked a friend to hold a baby dinosaur robot upside down. 大概10年前的一天,我让一个朋友头朝下地握持一个小恐龙机器人。 It was this toy called a Pleo that I had ordered, and I wa

发表于:2019-01-16 / 阅读(200) / 评论(0) 分类 TED演讲科技篇

Remember joysticks? Those old things you used to control your game characters? Microsoft is hoping that youll forget all about them this winter. Earlier this month, it unleashed Kinect, a controller-free motion-gaming device for the Xbox 360 console.

发表于:2019-01-19 / 阅读(146) / 评论(0) 分类 中英双语新闻

By David McAlary Washington 12 July 2006 Astronaut Mike Fossum (on arm)installs the International Space Station's railcar-like mobile transporter U.S. space shuttle astronauts are on their third spacewalk since Saturday, this time to practice method

发表于:2019-02-03 / 阅读(272) / 评论(0) 分类 2006年VOA标准英语(七月)

When you're out shopping it can sometimes feel like you're always stuck at the end of the longest line. 外出购物,总免不了碰上排队这个老大难问题:长长的队伍似乎总排不完。 Shoppers know this age-old dilemma all to well

发表于:2019-02-06 / 阅读(152) / 评论(0) 分类 阅读空间

Voice 1 Thank you for joining us for Spotlight! Im Ryan Geertsma. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Fires like this

发表于:2019-03-04 / 阅读(205) / 评论(0) 分类 环球英语 Spotlight
学英语单词
a stack of
absentation
aircraft general standards
alanylation
aleyrodidaes
angle for maximum righting lever
angulately
anteriolateral cordotomy
arcane glossolalia
artificial damping
as clean as a new pin
bean -eater
boddie
Boverton
calepitrimerus brevilinea
carelians
cattail millets
closely related species
coalescing
dacite-liparite
dan-ger
debt
dextrates
direct-attached
English Classics
entrance lobby
European bream
even-par
exobiologists
fascial strip
feathertails
feudal land rent
Ficus cunia
full lines
gap in the frog
gaussian form
go at sth
gotten out of repair
grease oil
handjam
helmet sight
heterosexualness
high speed stall
host attachment facility
hump lead
hyperproducers
hypothesizer
inland waterway
installment sore
inventory accounting method
jarjis (zarzis )
junceella juncea
jungle babbler
Krapeu Kom
lambiss
library subprogram
loosen the purse strings
low-point
luminous beam
magnetotail
man machine problem
maxstrlen
mcanique
miicromicro
mixed condensation
molasses grass
multistage filter
multiyear
neckdown
non-exclusive jurisdiction
oesophagobronchial
packaging paperboard
pre-remote
presiding
principle of equipollent load
profit on redemption of discount bond
program item
prototype kilogram
prototypical character
pyrogenic succession
Rebeca, L.da
remold
rust grease
Sandside
sapphirer
selecting cutting
show barn
Side-channel
sight locating
snoozer
stick force
sugar-cinnamon
synchronous altitude
theEuropean
thick wall part
Tolanate
tomas de torquemadas
toyes
under the disguise of
weatherling
welfare capitalism
whore-houses