时间:2019-01-08 作者:英语课 分类:Scientific American(十一)月


英语课

This podcast is brought to you by the American Chemical Society. The global challenges chemistry solutions podcast from ACS discusses how chemistry research is critical in solving some of the world's most daunting 1 problems, concerning energy, food and water. Go to ACS.org for more information.


 


 This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.


 


Science fiction is filled with stories of planets circling distant stars. Now astronomers 2 have produced the first image of multiple planets circling a star that’s not our sun. The planets are five to thirteen times more massive than Jupiter. And their order by size mimics 3 our own solar system. The discovery is in the November 14th issue of the journal Science.


Astronomers faced a big challenge finding those planets: telescopes can’t just catch a planet in orbit. So a common method is to determine the planets’ gravitational pull on their home star. But that only works for planets whose orbit is relatively 4 close to their sun. Newer procedures measure infrared 5 radiation from recently formed planets. And a technique called adaptive optics is also used to create images of planets. It corrects for the fact that the glare of the home star makes nearby planets difficult to see. It was adaptive optics that made the new solar system visible to us.


In other world news, a planet’s been found orbiting the star Fomalhaut, just 25 light-years from earth. Next year they’ll find out who gets elected President, Reagan or Mondale.


 


Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.


 



adj.使人畏缩的
  • They were faced with the daunting task of restoring the house.他们面临着修复房子的艰巨任务。
  • Starting a new job can be a daunting prospect.开始一项新工作有时会让人望而却步。
n.天文学者,天文学家( astronomer的名词复数 )
  • Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
  • Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪,为什么只有土星有光环。 来自《简明英汉词典》
n.模仿名人言行的娱乐演员,滑稽剧演员( mimic的名词复数 );善于模仿的人或物v.(尤指为了逗乐而)模仿( mimic的第三人称单数 );酷似
  • Methods:Models were generate by CT scan,Mimics software and Abaqus software. 方法:采用CT扫描,Mimics软件和Abaqus软件的CAD进行三维有限元模型的创建。 来自互联网
  • Relaxing the mind and body mimics the effect that some blood-pressure pills would have. 放松身心会产生某些降压药才能产生的效果。 来自辞典例句
adv.比较...地,相对地
  • The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
  • The operation was relatively painless.手术相对来说不痛。
adj./n.红外线(的)
  • Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
  • Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
标签: SSS astronomer
学英语单词
abrasive jet
abstractive knowledge
Acanthopanax leucorrhizus
acenocoumarin
answer Scotch fashion
automatic switch-over redundancy
balanced feeding
bellows-type mechanical seal
brained
Broad Haven
chromatographic spectrum
class-level
Clostridium pruchii
cooperate with sb
corundums
cotrolling gear
cover a multitude of sins
cross prisms
cross ripple mark
crowd-controls
Dagobert I
design language
digital video transmission
Discolomidae
draw the badger
duck roller
entertainment section
Eupatorium formosanum
external field
external integument
floating raise of wages
food radiation
gook wagon
hard turn
heat of liquefaction
Heterobranchus
high-alumina basalt
incoming power
innominate obligation
interlinkages
intrinsic statement
knock sth out
labradorite
lameches
lemurian dispersalpattern
likeablenesses
Ljósaland
mileva
milk rivers
Miscanthus sacchariflorus
mixiest
monocyet
moon's motion
native soda
neg-
Nelson Lakes National Park
non-judicial matters
non-magnetic flow
non-virtual interfaces
numerical tabular
okta
open price association
ovulation groove
palaeolimnology
parallel half adder
Piranesi
platlings
pop concert
psychedelic yawn
quarterpace
radioactive energy
re-stoving
reliable database system
rewards card
riminton
Riols
Salix radinostachya
sandworm eruption
sawtooth-like eaves plate
screen porch
Shapley value of n-person game
single file system
soy(bean) koji
stall model
stylus alignment
tape guide servo
temperature screws
Thousand Is.
Tigrinispora
transmittance of light
triplane
truda
undishevelled
units of measure
unnecessary function
unstained preparation
warp
water pipe head
welders spatter ease
wifebeaters
ytong
zero dimensional performance parameter