中心钻孔

Four times a year, Ghez focuses the telescope on the stars of the very heart of our Milky Way. She is looking for the telltale high speeds that reveal the presence of a black hole. The center of the M

发表于:2018-12-07 / 阅读(351) / 评论(0) 分类 超大质量黑洞

There's a hole in my bucket, dear Liza, dear Liza There's a hole in my bucket, dear Liza, a hole Then mend it, dear Goofy, dear Goofy, dear Goofy Then mend it, dear Goofy, dear Goofy, then mend it Wit

发表于:2018-12-14 / 阅读(335) / 评论(0) 分类 迪斯尼儿歌第四集

ARI SHAPIRO, HOST: President Trump will sign an executive order tomorrow that aims to expand offshore drilling. The order will essentially try to undo actions taken by his predecessor, Barack Obama, that restricted drilling in the Arctic Pacific and

发表于:2018-12-17 / 阅读(83) / 评论(0) 分类 2017年NPR美国国家公共电台4月

There was once a farmer who lived near a road. It was not a busy road, but from time to time, cars passed the farm. Near the farm gate, there was a large hole in the road. This hole was always full of

发表于:2019-01-03 / 阅读(122) / 评论(0) 分类 英汉幽默故事选读

How to repart a plaint When the plant grows too large for its original part. It needs to be reparted. This can be done quickly and easily if you follow this instructions. First, you should cut off the bottom of the part with small stones. Then put tw

发表于:2019-01-10 / 阅读(279) / 评论(0) 分类 高考英语作文高分必备

U.S. President George Bush is again calling on opposition Democrats in Congress to expand offshore oil drilling. VOA White House Correspondent Scott Stearns reports, high energy prices are a big part of this year's presidential campaign. President G

发表于:2019-01-13 / 阅读(102) / 评论(0) 分类 VOA标准英语2008年(八月)

Environmentalists claim the drilling could contaminate New York's unfiltered drinking water sources with dangerous chemicals and radioactivity Carolyn Weaver | New York 24 December 2009 Photo: Sabine Aronowsky Manhattan borough president Scott String

发表于:2019-01-13 / 阅读(113) / 评论(0) 分类 VOA标准英语2009年(十二月)

Alaskan Wins Environmental Prize for Opposing Offshore Drilling Saving her village traditions means everything to community activist Caroline Cannon. This includes the annual hunt for one bowhead whale, in which villagers use wood-framed boats covere

发表于:2019-01-13 / 阅读(100) / 评论(0) 分类 VOA标准英语2012年(四月)

It's like trying to pick out an individual inside the middle of a busy city, with lights and cars, and things happening all around them. But that wasn't the only problem. Vast, swirling clouds of dust and gas prevent visible light from the centre of

发表于:2019-01-23 / 阅读(63) / 评论(0) 分类 探索与发现2013年

At last, astronomers had a map of our galaxy. A panorama of the Milky Way, it would never be possible to see from Planet Earth. 27,000 light-years from our solar system is the centre of our galaxy. If we were ever going to have a chance of seeing a b

发表于:2019-01-23 / 阅读(53) / 评论(0) 分类 探索与发现2013年

The X-ray image revealed how the black hole at the heart of the galaxy was firing unimaginable amounts of radiation into surrounding space and with extraordinary consequences. We could see what was going on at the centre and we could start to underst

发表于:2019-01-23 / 阅读(70) / 评论(0) 分类 探索与发现2013年

Was there any connection between the two? What Magorian discovered was completed unexpected. The relationship that we find was essentially that the bigger the galaxy, the bigger the black hole. That's in its broad terms. If you want to be a bit more

发表于:2019-01-23 / 阅读(64) / 评论(0) 分类 探索与发现2013年

Instead, it seems to be a gas cloud moving at huge speeds right in the direction of the black hole. But what really rang along bells was the way it had changed shape. We see that this gas cloud as it moves closer and closer to the black hole, is gett

发表于:2019-01-23 / 阅读(57) / 评论(0) 分类 探索与发现2013年

By Cynthia Kirk ENVIRONMENT REPORT - April 26, 2002: Arctic Refuge Drilling This is the VOA Special English ENVIRONMENT REPORT. The Democratic-controlled United States Senate has voted to block explor

发表于:2019-01-30 / 阅读(121) / 评论(0) 分类 健康与环境

Prank video destroying new Apple smartphone receives 10m views, with some seemingly tricked into making 3.5mm hole in the bottom of their devices. 这则破坏新款苹果手机的恶搞视频浏览量高达1000万,有些人甚至还真的上当,在

发表于:2019-02-04 / 阅读(90) / 评论(0) 分类 阅读空间

By Mil Arcega Washington 11 July 2006 Watch Offshore Drilling report The United States House of Representatives has passed a controversial measure designed to lift a 25-year ban on oil drilling in U.S. coastal areas. As VOA's Mil Arcega reports, env

发表于:2019-02-04 / 阅读(243) / 评论(0) 分类 2006年VOA标准英语(七月)

BEIJING, May 19 (Xinhuanet) -- Google on Wednesday began fixing a security hole in some 97 percent of Android phones that could let hackers snatch important credentials at public WiFi hotspots. The fix, which addresses a hole allowing hackers to acce

发表于:2019-02-08 / 阅读(115) / 评论(0) 分类 英语新闻

音乐咖啡厅:Rihanna再度牵手Justin Timberlake(Hole In My Head) Artist:Rihanna Song:Hole In My Head [00:06.66]You got a hole in your head [00:09.79]You got a hole in your head girl [00:13.10]You got a hole in your head [00:16.19]You got a h

发表于:2019-02-08 / 阅读(172) / 评论(0) 分类 音乐咖啡厅

There was once a farmer who lived near a road. It was not a busy road, but from time to time, cars passed the farm. Near the farm gate, there was a large hole in the road. This hole was always full of water, and the drivers of the cars could not see

发表于:2019-02-08 / 阅读(111) / 评论(0) 分类 趣味英语

Down the Rabbit Hole Alice and her big sister were sitting on the grass. Her sister was reading a book, but Alice had nothing to read. She looked at her sister's book again. There were no pictures in it. What good is a book without pictures? She wond

发表于:2019-02-08 / 阅读(152) / 评论(0) 分类 趣味英语
学英语单词
Altynvka
angle of ruling
annual country target
as swift as lightning
atropic acid
basic indexing and retrieval system
berenato
blind check
Boole
bowels
bryopsis mucosa
Christian Social Union
closed end acorn nuts
coaxial resonant cavity
coloboma of optic nerve
compassionated
dihydroxyiodo
disinterested
distribution, power
doubly excited state
dynamic trial
echiuran
economic disequilibrium
eight brocades
electro anaesthesia
endless apron hay loader
epithelium mucosal
ethyl isonitrile
eurolink
evaluably
extravascular Fluid
filoviridaes
foulish
gate tower
Gjemmestad
global product management
glycerolmonoformate
grain-size control
grapevines
guidewheel
hydra electric system
intralamellar tissue
jevne
Kafr Rabī'
Kaligiri
krent
left-half
liking me
locking cylinder
longitudinal of epo?horon duct
lower decomposition
lumisterol
macro-karyon
mann-kendall method
mesosternellum
mold hardness tester
Monocelastrus
Morteros
moulded insulation
moyenne
mucking bucket
multiple joint
nanotesla
nassirs
nonbureaucrats
nonreactivity
occupational retirement scheme
osteocollagenous fiber
outer control limits
p-carboxyphenylarsine acid
paper sizes
parahilgardite
partial noise exposure index
peggy-mast
pfalzs
plants out
pol-wheat
portioning machine
possible actions
proadministration
quick turnover and small profit
renig
scamp work and stint material
semifirm
situation management
slack cables switch
social-policy
solar maximum
spectral values
subscripting formula
sultana bread
suppressed strabismus
Swabia
swinging bracket
term for deliberating
top connection nut
trametes gibbosa
triarylamine
valuation account
Vas Megye
vote in the negative
way lubricants