时间:2019-01-22 作者:英语课 分类:自然百科2011年


英语课

 We are taking a ride through the Milky 1 Way. First, we are traveling to a place where stars are born. Even at the speed of light, 196,000 miles a second, the journey lasts for 1,500 years. We've arrived at the vast glowing cloud of gas and dust, the great Orion Nebula 2. With the Earth in this new neighborhood, the skies become a brilliantly illuminated 3 cosmic canvas. But this cloud is more than just a work of art. It holds the key to how our sun and every star in the galaxy 4 came to be. The first clues come from looking at the Milky Way from our perspective. It seems there is more here than just stars. With the naked eye, we can pick out large dark patches. Astronomers 5 like James Bullock provide a clear picture. 


 
“Perhaps, the most beautiful part of this image is that we have this contrast of dark and light regions running through the plain of the disc. What that really is? It’s dust. They are clouds of dust that are casting a shadow from the back of the stars and the stars are trying to shine their light through. They are dust clouds there that blocking a light, much like a cloud on Earth would block the sun.”
 
These vast clouds of cosmic gas and dust stretch thousands of light-years across the Milky Way. Hubble has spotted 6 them in most spiral galaxies 7. Dark, ghostly bands, woven throughout their spiral arms and spreading across their entire discs.
 

adj.牛奶的,多奶的;乳白色的
  • Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
  • I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
n.星云,喷雾剂
  • A powerful telescope can resolve a nebula into stars.一架高性能的望远镜能从星云中分辨出星球来。
  • A nebula is really a discrete mass of innumerous stars.一团星云实际上是无数星体不连续的集合体。
adj.被照明的;受启迪的
  • Floodlights illuminated the stadium. 泛光灯照亮了体育场。
  • the illuminated city at night 夜幕中万家灯火的城市
n.星系;银河系;一群(杰出或著名的人物)
  • The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
  • The company has a galaxy of talent.该公司拥有一批优秀的人才。
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》
adj.有斑点的,斑纹的,弄污了的
  • The milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
  • Sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。
星系( galaxy的名词复数 ); 银河系; 一群(杰出或著名的人物)
  • Quasars are the highly energetic cores of distant galaxies. 类星体是遥远星系的极为活跃的核心体。
  • We still don't know how many galaxies there are in the universe. 我们还不知道宇宙中有多少个星系。
学英语单词
-toed
aduliss
algerine shawl
alicyclic acid
anodoluminescence
Argyroxiphium sandwicense
arsenic triselenide
attention please
basic cobol batch program
belladonna liquid extract
benippled
blume
both end
budd(h)ahead
Carl Anderson
chain stoppor
chintzified
chloroboric acid
clutch release finger
column commisural ascending
continuous heat treating
curacoa
dalco
DC restorer diode
Dendritobilharzia
documentary bill for collection
drillability
drive line friction
dry earth dredger excavator
Dysiston
empirical probit
energy
FBRCM
fetchin
fissura posterolateralis cerebelli
flame retardant cable
Foramina incisiva
form attributes
genus neoceratoduss
Girardinia
give five
grading wages
grossulaceous
group visa
gynandrous
heavy contact
high pressure gauge
hypoxylon crocopeplum
Incremental Revenue Analysis
indigenista
ivor armstrong richardss
Joinville
kingshill
letter of marque
lipophagia
logic machine
machinery control console
mantis shrimp
mask negative
Medina, R.
medulla ossium flava
meningo
meroblastic division
movies-on-demand
Niueans
nondiabaticity
nunavuts
observation hole
organozirconium
ourapteryx clara formosana
paoult correction
partnership characteristics
pooh
poor heat transfer
price-cuttings
propeller blade tip
quality of tolerance
raffia ruffias
Ramus palmaris nervi mediani
rectal swab holder
regald
repugnaunce
rockadelic
rotating drum image scanning digitizer
Santo Antônio da Platina
sapienization
shyster
skydaddy
spray droplets collector
standard system I/O file
steeplifting
stiff safety fence
stone-masons' disease
strangeness number
structure of problem
taime
thyroid cancer localization
unselfchanging
vertical union
visional
water witches
yeast infections