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Rho Ophiuchi dark cloud is one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. The infrared astronomical satellite, now celebra

发表于:2018-12-05 / 阅读(358) / 评论(0) 分类 国家地理2008年

Scientists at the Massachusetts Institute of Technology (MIT) have created what could be a breakthrough in providing clean, alternative energy. Researchers have invented an artificial leaf that splits water into hydrogen and oxygen and stores the ene

发表于:2018-12-07 / 阅读(341) / 评论(0) 分类 创新英语

THE PRESIDENT: Hello, everybody. Now, let me just comment, first of all, on the fact that I can't get the networks to break in on all kinds of other discussions -- (laughter.) I was just back there listening to Chuck -- he was saying, its amazing tha

发表于:2018-12-18 / 阅读(312) / 评论(0) 分类 美国总统演讲视频

20 The Historical Significance of American Revolution The ways of history are so intricate and the motivations of human actions so complex that it is always hazardous to attempt to represent events covering a number of years, a multiplicity of person

发表于:2019-01-02 / 阅读(640) / 评论(0) 分类 英语范文背诵20篇

Todays episode concerns a what-you-may-have-been-wondering-about topic. That sure was a mouthful, and it illustrates the problem of stacked modifiers, which occurs when you string together too many words to describe a noun at the end of the mouthful.

发表于:2019-01-02 / 阅读(300) / 评论(0) 分类 英语语法 Grammar Girl

Artificial Muscle Brings Back Blink A study in the Archives of Facial Plastic Surgery reports the development of an artificial muscle system that could restore the ability to blink to stroke and injury patients. Cynthia Graber reports Most of us blin

发表于:2019-01-02 / 阅读(404) / 评论(0) 分类 60秒科学

Grammar Girl here. Today guest-writer Bonnie Trenga is going to help us take a break from serious grammar and instead delve into the world of comedysome intentional, some not. Groucho Marx said it best: One morning I shot an elephant in my pajamas. H

发表于:2019-01-07 / 阅读(305) / 评论(0) 分类 英语语法 Grammar Girl

By Dan Robinson Capitiol Hill 16 March 2007 Former undercover CIA officer Valerie Plame, who has been at the center of a controversy involving the role White House officials played in revealing her identity, has testified in public for the first tim

发表于:2019-01-08 / 阅读(387) / 评论(0) 分类 2007年VOA标准英语(三月)

on a cloud under a cloud 你们肯定都知道英文里的前置词有时会使人很混乱,它们在句子里虽然不显眼,但是作用却很关键,用错了一个前置词意思可能完全不

发表于:2019-01-09 / 阅读(298) / 评论(0) 分类 美国习惯用语

By Franz Wild Abidjan 24 May 2006 Charles Konan Banny greets villagers in Meagui In war-divided Ivory Coast disarmament and personal identification, the two obstacles to elections, saw partial success in a pilot program this week. There is little si

发表于:2019-01-13 / 阅读(346) / 评论(0) 分类 2006年VOA标准英语(五月)

Doctors Achieve Milestone Using Artificial Heart With No Beat In March, two doctors at the Texas Heart Institute in Houston achieved what medical experts call a major milestone by implanting a continuous-flow artificial heart in a human patient. The

发表于:2019-01-13 / 阅读(323) / 评论(0) 分类 VOA标准英语2011年(七月)

Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani

发表于:2019-01-14 / 阅读(340) / 评论(0) 分类 VOA标准英语2011年(四月)

The International Committee of the Red Cross is appealing for access to all areas of conflict in Libya as fighting intensifies. The president of the ICRC, Jakob Kellenberger, says the conflict in Libya has descended into civil war. He says he is alar

发表于:2019-01-14 / 阅读(305) / 评论(0) 分类 VOA标准英语2011年(三月)

Scientists say they have successfully tested artificial blood vessels grown in the laboratory. In a heart bypass operation, surgeons typically remove a vein from a patient's leg and use it to replace blocked arteries that feed the muscles of the hear

发表于:2019-01-14 / 阅读(290) / 评论(0) 分类 VOA标准英语2011年(二月)

By Al Pessin Honolulu, Hawaii 20 October 2009 Command of U.S. forces in Asia and the Pacific and Indian Oceans passed to a new commander on Monday at a ceremony in Honolulu, Hawaii. Navy Admiral Robert Willard said the U.S. commitment to the region

发表于:2019-01-14 / 阅读(256) / 评论(0) 分类 VOA标准英语2009年(十月)

Grammar Girl here. Today's topic is misplaced modifiers. Of all the writing errors you can make, misplaced modifiers are among the most likely to confuse your readers, but they're also kind of fun because misplaced modifiers can give your sentences s

发表于:2019-01-30 / 阅读(381) / 评论(0) 分类 英语语法 Grammar Girl

Researchers have developed a method to activate electronic implants in the body and eliminate bacterial infections using a wireless signal。 研究者已经开发了一种运用无线信号激活人体中电子植入物来消除细菌感染的方法。

发表于:2019-02-08 / 阅读(286) / 评论(0) 分类 英语新闻

Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe

发表于:2019-02-08 / 阅读(299) / 评论(0) 分类 英语新闻

U.S. military officials say they have identified the four Marines seen on video urinating on the bodies of dead Afghan Taliban fighters. The Naval Criminal Investigative Service, heading the main inquiry into the video, has also reportedly questioned

发表于:2019-02-08 / 阅读(374) / 评论(0) 分类 英语新闻

Leaders of the Greek and Turkish communities of Cyprus are starting a new series of negotiations aimed at re-unifying the divided island. Cypriot President Demetris Christofias and Turkish Cypriot leader Mehmet-Ali Talat have begun a series of three-

发表于:2019-02-11 / 阅读(332) / 评论(0) 分类 VOA标准英语2010年(一月)
学英语单词
.na
agutaq
air-setting binder
all-cut set
area defence missile
attention hypothesis
barebums
blepharochalasis dermatolysis plapebrarum
BORDETELLOSES
bouncy ball
bright-pinks
brocciu
capacitor box
change gear mechanism
charterless
chirigotas
colonelship
commentary channel
continuous concrete mixer
criterion rule
dandy roving
dead-end main
dead-point
DFDD
disauthentic
dobeying
earl marshals
ecothiopate
empiric(al) function generator
end-of-reel mark
erddigs
erythritol anhydride
finite rank
Gerrhonotus
glaced
gossypoid
idle away time
idlingly
imitation leather hand bag
in flood
in pole position
input output-driven testing
interface bus
inverse maser effect
Kibæk
klonsky
knock sb for a goal
lacertus musculi recti lateralis oculi
lift engine
limiting noise emission
lithocalcirudite
Luama
lung butter
lupus-like
lusory
mendopo
microporellids
multiple bridge intersection
near thing
neutrophilic chemotactic factor
nitrocellulose powder
nylon-epoxy adhesives
Paget process
panplain
parallelogram lever
Pedregal, Pta.do
planges
potentiometer movable arm
Prosencephali
r ray apparatus
real-time address
removal from office
retaliated
river flood
rmnp
rock mass
seasonal heat load
secondary ion background
simpatica
sippel
slugging bed
speed of drilling
stabbing pain
step input/output table
stokesian wave
streaking massage
stream attribute
synthetic rubber tank
Tetrastigma longipedunculatum
the wise old world
thelerethism
thenad
total capital employed
trace test of cointegration test
traumatised
uneconomically
urolithiases
varuna Anopheles
vent plate
verra
wet stacking
zero-based conformity