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(147) / 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(114) / 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(132) / 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(113) / 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(127) / 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(119) / 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(107) / 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(139) / 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(127) / 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(131) / 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(151) / 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(156) / 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(145) / 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(119) / 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(122) / 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(125) / 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(103) / 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(218) / 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(99) / 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(154) / 评论(0) 分类 环球英语 Spotlight
学英语单词
a minimum speed airfoil
affectated
aluminium base grease
american megatrends inc.
announce monitor
bakbrede
be killed in battle
behavers
belmont l.
BMus
bob about
bulk modulus(modulus of volume elasticity)
campestral
candidate volume
caulking groove
chelatable
claughtons
combined nuclear and gas turbine installation
concrete product plant
cubbons
delude oneself
Dera Ismāil Khān Div.
descending colon
despatialize
DIAND
drunk texted
Dryopteris goldiana
dynamic set
examination of cerebrospinal fluid
family polynemidaes
ferromanganese crust
first speaker
fixed assets to capital ratio
founders bonds
frequency and time standard
germination stage
gerths
Gnosticism
gravediggers
helicoides
hold a celebration
internodal nervous connection
John Dillinger
kilomol(e)
Lapalissian
largos
Leuchs's base
linds
list scheduling
lymphoglandulae pectorales
Mahlwinkel
mass-area ratio
mereologies
MIDI setup
murina bicolor
natrium-Hewettite
navaho
neutrally
next but one
Okaihau
omental cavity (or omental sac)
oxidative bleaching
para-Octopamine
paraffinic crude
parish churches
pay for performance
pickling blister
platonic harmony
pneumatic rabbit hole
pollen morphology
polymerization degree
Postmastoidectomy
pre-scene
propene thiol
PTB-SC-SP
pyrazolic
repoire
response functional
riemann convolution
rigorism
segye
sherwal
ship's creditor
source rate
steatopygias
steffy
sugar parents
surplus materials division
system start-up
Talence
target history
threo configuration
tomayto tomahto
transferable hotbed
turbo-ramjet
variableparameter channel
voice access arrangement
water tight compartment
whereanent
wine-time
with reasonable care
zoogeographic