时间:2019-01-22 作者:英语课 分类:自然百科2010年


英语课

 To make sure Kepler's truely found a planet, scientists are using one of the largest earth-based telescopes for conformation. This telescope will also determine the planet's mass and distance from its star. Scientists are most interested in the small rocky worlds that sit in what's called the "Goldilocks" zone. 


 
Remember how important liquid water is to life? Well, if a planet is in the "Goldilocks" zone, it's not too close, and not too far from its star--it's just right. And it's possible for water to flow there as a liquid.We obviously sit in the "Goldilocks" zone, but in our solar system Mars and Venus also do, but we've yet to find life on either those two planets.
 
"Kowning if a planet is inhabitable, is not as straightforward 1 as saying, oh, we found a planet the size of the earth, and it's 90 million miles from a sun-like star. Venus are inhabitable, and Mars are inhabitable."
 
"Why is Venus such a harsh hideous 2 environment? Some 6,00 degrees celsius 3 or so. And of course, the answer for Venus sadly is that some greenhouse effect, global warming, has overtaken Venus."
 
When it formed over four billion years ago, Venus had water, and probably vast oceans on its surface. But there was also a lot of the greenhouse gas water vapor 4 in the atmosphere, which blanked it and heated the planet. And this Venus got hotter. More and more water on its surface evaporated into the atmosphere, trapping the heat even more. 
 
On earth, much of the green gas carbon dioxide is chemically bound to the rocks, and it was this way on young Venus too. But when it've come to about 750 degrees fahrenheit 5, this carbon dioxide started getting out of the rocks and into the atmosphere. With an atomsphere of water vapour and carbon dioxide, this cycle kept going and going and the runaway 6 greenhouse effect has left Venus dry, lifeless,and...

adj.正直的,坦率的;易懂的,简单的
  • A straightforward talk is better than a flowery speech.巧言不如直说。
  • I must insist on your giving me a straightforward answer.我一定要你给我一个直截了当的回答。
adj.丑陋的,可憎的,可怕的,恐怖的
  • The whole experience had been like some hideous nightmare.整个经历就像一场可怕的噩梦。
  • They're not like dogs,they're hideous brutes.它们不像狗,是丑陋的畜牲。
adj.摄氏温度计的,摄氏的
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
n.蒸汽,雾气
  • The cold wind condenses vapor into rain.冷风使水蒸气凝结成雨。
  • This new machine sometimes transpires a lot of hot vapor.这部机器有时排出大量的热气。
n./adj.华氏温度;华氏温度计(的)
  • He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
  • The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
n.逃走的人,逃亡,亡命者;adj.逃亡的,逃走的
  • The police have not found the runaway to date.警察迄今没抓到逃犯。
  • He was praised for bringing up the runaway horse.他勒住了脱缰之马受到了表扬。
学英语单词
academic seat
Al Yāsāt
alveoliform
amoebicides
area of midship section
Arteria supratrochlearis
as-spun fibre
auto-answers
bacterial drug resistance
be taken into deliberation
bilge hat
bimbo eruption
bodies corporate
bottom stone
Brahmoism
breaking change
Brown-Neil process
buchette
bulaloni
Burhanpur
capstan speed PWM
carbonatation process
Cauchy equation of motion
center frogs
chlorine flowrate
cognitum
conservative property of air mass
deferring depth of modulation
defueling
disintegration chain,disintegration family
electrode bias
end place
Ethofenprox
false grip
flow chart of data processing
Fuel fabrication
gas ballast port
grid glow tube
Hanza
have someone over
high ratio flour
horizontal fibre
horn sprue
house-arrest
Humboldtian
immediate root filling
indirect-view thermal imager
insurance amount
Israel
joined-up thinking
K (Kelvin temperature)
layer service description convention
lebovic
Liffré
magnetic star delta switch
Mers-les-Bains
mesosternal episterna
metal carbonyl catalyst
methyl hydrogen sulfate
misseses
miter mushroom
Moghal
mortar for pounding
neomatabiol
nitrosalicylic acid
nutrite
optical sign
pillar stand
pmch
popcorn film
position aspect
pseudofilm boiling
Pyle, Howard
raphidiferous
relent
remote batch mode
rillock
stangos
statement of auditing procedure
stir all the gorge of
straight-line drawing
strange to
subzone network
successe
Summerhaven
superinrtendent
swell organ
tapstress
topographical plan
Torrey, John
Transport Documents of Dangerous Goods
trigger delay
trip-wires
U-11100A
underway transfer rigging
vaginal tampon
wellorderings
Widowitz's sign
wolf-rayet star (w-r star)
wrightoporia avellanea
Zamazim
zianite