针孔

It means that Silk and Ree's theory may be right and if it is also right that supermassive black holes helped trigger star formation, then it must mean that all giant black holes and their galaxies ar

发表于:2018-12-07 / 阅读(265) / 评论(0) 分类 超大质量黑洞

In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou

发表于:2018-12-07 / 阅读(359) / 评论(0) 分类 超大质量黑洞

In March 2000, two astronomers made an extraordinary discovery, one that is set to overturn our understanding of how the universe formed. We're never going to see a time like this in astronomy again.

发表于:2018-12-07 / 阅读(357) / 评论(0) 分类 超大质量黑洞

But we are just one in 125 billion galaxies of different shapes and sizes spinning through space. Yet scientists haven't been able to explain how a single one of these galaxies was created. Galaxy for

发表于:2018-12-07 / 阅读(323) / 评论(0) 分类 超大质量黑洞

This ferocious heart of brilliant hot gas is called a quasar. Scientists thought this whirling mass might be caused by a giant black hole sucking up gas and stars, literally feeding on the center of a

发表于:2018-12-07 / 阅读(276) / 评论(0) 分类 超大质量黑洞

EXPLORATIONS - Blue Holes: Some of the Least Explored Areas on Earth BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands s

发表于:2018-12-07 / 阅读(84) / 评论(0) 分类 2011年VOA慢速英语(十一)月

[00:00.52] 12.18 Holes in His Mind [00:06.29]Major James Nesmeth had a dream of improving his golf game and he developed a unique method of achieving his goal. [00:14.35]Until he devised this method, he was just your average weekend golfer, shooting

发表于:2018-12-26 / 阅读(64) / 评论(0) 分类 温馨夜读II

Idiom: Needle and a haystack 大海捞针 Hit the book: Master As well as Mood Chemical Be stuck on Discover

发表于:2018-12-27 / 阅读(113) / 评论(0) 分类 趣味青春英语

George wore a pair of blue shorts around the house. They were old, faded, and ugly, but they were comfortable. And when you are at home, you want to be comfortable. It wouldn't be called Home, Sweet Home if you didn't feel comfortable there. But when

发表于:2018-12-31 / 阅读(304) / 评论(0) 分类 365个英语简短小故事

044 The Darning Needle Long ago, there was a needle. She thought she was so delicate that she was appropriate only for embroidery. Hold me tight. I am so tiny that you can't find me if I fall on the floor. The needle shouted at the fingers. What an a

发表于:2018-12-31 / 阅读(205) / 评论(0) 分类 100个儿童英语小故事

What is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region of space (not a thing) i

发表于:2019-01-02 / 阅读(54) / 评论(0) 分类 双语有声阅读

Those stars don't feel the black hole. They feel the rest of the stars in the galaxy. They don't know or care that the black hole is there. If you took the black hole away from the galaxy, they would

发表于:2019-01-02 / 阅读(328) / 评论(0) 分类 超大质量黑洞

If, as it now seems, every single galaxy has a black hole at its heart, this can't be a coincidence. Perhaps black holes are an essential part of what galaxies are and how they work. No one had expect

发表于:2019-01-02 / 阅读(352) / 评论(0) 分类 超大质量黑洞

Supermassive Black Holes Muse oh baby dont you know i suffer? oh baby can you hear me moan? you caught me under false pretences how long before you let me go? you set my soul alight you set my soul alight (you set my soul alight) glaciers melting in

发表于:2019-01-03 / 阅读(85) / 评论(0) 分类 电影歌曲

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quantum Theory By Caty Weaver Broadcast: Tuesday, August 17, 2004 VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Dought

发表于:2019-01-07 / 阅读(89) / 评论(0) 分类 科技之光

BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands surface. These cave systems form in carbonate rock, often on islands.

发表于:2019-01-12 / 阅读(97) / 评论(0) 分类 2010年VOA慢速英语(十一)月

New Data Adds to Understanding of 'Black Holes' WASHINGTON Scientists continue to learn more about black holes in space, places where the pull of gravity is so strong that not even light can escape. Black holes occur after supergiant stars explode in

发表于:2019-01-14 / 阅读(106) / 评论(0) 分类 VOA标准英语2016年(九月)

释义: Stack:干草堆;Something that is extremely difficult to find. Anything that's on the verge of being impossible.很难找到的东西,也就是大海捞针; 来源: Today, this phrase is typically said as It's like trying to find

发表于:2019-01-17 / 阅读(76) / 评论(0) 分类 英语俚语天天说

This is the VOA Special English Health Report. For medical students, real experience begins not in a classroom but at a teaching hospital. These doctors in training are supervised. But sometimes accidents happen and the students get injured. For exam

发表于:2019-01-31 / 阅读(103) / 评论(0) 分类 2010年慢速英语(二)月

A recent study found almost 60 percent of surgical residents admitted they had sustained needlestick injuries when they were medical students. Blunt tip needles, such as this one, are considered safer A recent study shows that medical students and ho

发表于:2019-02-05 / 阅读(86) / 评论(0) 分类 VOA标准英语2010年(二月)
学英语单词
a TLA
acetyldigoxin
adeney
agency broker
ameroseius vietnamensis
antidiagonal sequence
articulated suspension
ascending letters
basketball-game
beta-ketopalmitic acid
blow in the bag
brass-tacks
burst sram
caisson sinking process
carry something into effect
cell substrain
centrifugal pot spinning machine
certionate
cherry-pop
common axes
concordaunt
cottocomephorid
cropping index
crossingover
custom house certificate
cutterbar losses
DejaNews
dexterity
dihydrolipoic acid dehydrogenase
downtrends
economic counselor's office
effect on preference reversals
even-odd system
exobatany
feinschmecker
fetamin
film library
fission plasma
fistulizing
glass melting
grade slope
gross sum
high sulfur steel
hull supply flapper valve
inchs of head
intermittent gaslift
intravenous pyelograms
itinerary of voyage
ivnik
jaw muscle
jods
laminated ceramics
Lawrenciana
Leerbeek
light drawn
liquamen
low-rate code
luswart
make sb yawn
mechanobalance static stability
medicates
mm. intercostales interni
musicali
nicofer
non-aqueous gas
NSAI
oil suction
old population
overabundance
paleotti
paracrostics
parallel memory access
parcaes
pay a score
pelvioileneocystostomy
Pimpinella silvatica
Pliopithecus
possesst
precaution device
problematized
protection check
pulley eye
Raupach
revener
Ross Island
s treat
Sasanid
Sierra de Yeguas
stemmer saw
talk through one's nose
tallie
to-name
tone control transformer
topographic survey team
trainer liners
truck transport terminal
tryptic enzyme
tuffacous facies
unpaid expenses
valerie
wet year
Zander's cells