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
a pain
adjusting screw for transverse
adrenocortical syndrome
bleeder condensing turbine
BNIB
Brinsen cheese
but me no buts
butadiene-strene rubber
capitulum uln?
chair-back
chrome-plated
cleaning by air current
clinometry
column of fluid
combat for
composite-rates
corn i.
cotton bird
crash machine
creditors of a bankrupt estate
denises
dimications
divinylether
document a theory with facts
drop the other shoe
electronic direct-current motor controller
Elops saurus
engineering map
fillstrath terrace
Finlay River
glass-tube manometer
h.o.w
hardness value
hardware performance
hematobilia
hexanestrol
hot-button issue
integrated pre-service cleaning
isan
Jeconiah
kashima odori (japan)
Kjölur
law of Archimedes
Leland Stanford
lexical devices
like a headless chicken
macadamia integrifolias
magnetic filtration
main foil flap hydraulic actuator
math co-processor
meter-candle
modified two-bath process
motor-mouths
multipass exchanger
ocho
one upper
OREOSOMATIDAE
pedissequent
peep-arm
pens-
phosphorates
pi characters
plagiarization
polyneme
population biologist
precancerous dermatitis of vulva
Quemicetina
quick cell facility
repose trust in
resonance reactance
rip strength
rocka
Rotomat
scooted
semicontinuous casting machine
shake the dust from one's shoes
sika deer
sloped beam
smart-home
soberized
society-centred
space clock instrument
stainless steel wrap wire
stellate vein
stump-knocker
sunchronization pulses
superconducting magnet
supervisory operating people
takeover arbitrage
ticle
top charging furnace
torque-converter
trapezius muscles
triparanol
Turki
un-fun
under-shortening
understand something in its proper latitude
ventricular ectatic aneurysm
walgreens
white-sand
yellow pyrite