时间:2019-02-03 作者:英语课 分类:VOA标准英语2008年(十二月)


英语课
NASA says its next mission to check for life on Mars will have to wait two more years. In the meantime, NASA plans to continue testing its next-generation Mars rover, and it hopes to continue exploring the red planet with the help of the European Space Agency.
 






New NASA Mars Science Laboratory rover



NASA administrators 2 say they will launch the Mars Science Laboratory two years later than previously 3 planned. The mission was supposed to send a new rover to Mars in October 2009 to study the planet's environmental history and determine if conditions are, or ever were, able to support life.

NASA administrator 1 Michael Griffin says the launch date is no longer feasible because of testing and hardware problems.

"We have determined 4 that trying for 09 would require us to assume too much risk, more than I think is appropriate for a flagship mission like the Mars Science Laboratory," he said.

Griffin says NASA would delay the launch for just a few months if possible, but the positioning of Earth and Mars only allows for a launch every two years.

NASA Associate administrator Ed Weiler says the extra time will allow for more thorough testing and the resolution of all technical problems. Weiler says avoiding a mad-dash to launch is the best solution.

"Failure is not an option on this mission," he said. "The science is too important and the investment of American taxpayer 5 dollars compels us to be absolutely certain that we have done everything possible to ensure the success of this flagship planetary mission."

NASA says the rover is one of the most technologically 6 challenging missions ever. Officials say delaying the mission will cost about $400 million more, but NASA director Charles Elachi says it is necessary.

"This is a very complicated mission and Mars is a very unforgiving planet," he said. "The best thing is to focus the nest two years on really understanding the present system, testing and testing it so we are successful."

In addition to the launch in 2011, NASA officials also say they have just agreed to join the European Space Agency in planning joint 7 Mars missions in the future. Associate Administrator Ed Weiler says working with the European Space Agency will decrease costs and help both groups advance their studies of Mars.

"We both have the same goals scientifically," he said. "We want to get our science communities together and start laying out an architecture. They have some ideas and we have some ideas. Let's work together."

Weiler says if the two agencies stop competing with each other and work together, they can both complete more advanced missions to the planet.



n.经营管理者,行政官员
  • The role of administrator absorbed much of Ben's energy.行政职务耗掉本很多精力。
  • He has proved himself capable as administrator.他表现出管理才能。
n.管理者( administrator的名词复数 );有管理(或行政)才能的人;(由遗嘱检验法庭指定的)遗产管理人;奉派暂管主教教区的牧师
  • He had administrators under him but took the crucial decisions himself. 他手下有管理人员,但重要的决策仍由他自己来做。 来自辞典例句
  • Administrators have their own methods of social intercourse. 办行政的人有他们的社交方式。 来自汉英文学 - 围城
adv.以前,先前(地)
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
adj.坚定的;有决心的
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
n.纳税人
  • The new scheme will run off with a lot of the taxpayer's money.这项新计划将用去纳税人许多钱。
  • The taxpayer are unfavourably disposed towards the recent tax increase.纳税者对最近的增加税收十分反感。
ad.技术上地
  • Shanghai is a technologically advanced city. 上海是中国的一个技术先进的城市。
  • Many senior managers are technologically illiterate. 许多高级经理都对技术知之甚少。
adj.联合的,共同的;n.关节,接合处;v.连接,贴合
  • I had a bad fall,which put my shoulder out of joint.我重重地摔了一跤,肩膀脫臼了。
  • We wrote a letter in joint names.我们联名写了封信。
学英语单词
a moving force
achaenocarp
active tonnage
alinating
Aq. astr.
asceticss
Auad, Ras
automatic zero-set circuit
baule's equation
be weary of
bromborough
Bubulu
bull-holder
caf
chargeable assets
cinchopen
circular list structure
cluster roll
consperse
contractee
cross-verification
cryoprison
curtain kiln
curve crank
dipotassium phosphate
drop the veil
duffel
electrical drill
Erianthus formosanus
ethylphenylcarbarmate
extended coupon
family lacertidaes
fariss
fern-leaves
fourth window
fridrikas
groovelike
hay conditioners
high-Albite
highly specialized personnel
hillwood
hoppus tons
hypopietic
indulins
information technology infrastructure
is present in
jaialai
Kabinu
kalamatianos (greece)
Kapalukha
karlo
laser-tissue
lateen-rigs
literacy education
low-noise motor
multi-centered compound curve
natural language and literature
negative thixotropy
network reconfiguration
nifesima
no risk till on board
nuclear fuel conversion
once-barren
out-tech
paradiazine
partial sterilization
pipeline control
playtes
pres-needle
pressure boiler
print-meter
pure binary
radiating dikes
ralik
rassemblements
redonda
resin system
river crab
romands
rosin glycerin ester
scale of temperature
single extraction
single-phase current locomotive
small ale
spikers
spore suspension
staybridge
steroid-sparing
subsistit
sulcus anuli tympanici
sulfuric dioxide
supervisory regime
Tear is the fluid of the liver
tetradecynic acid
ultradiazin
unfezable
Usuki-wan
V-cillin
vatican cities
wave-wave resonant effect
where-are-they-now