分散相材料

Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li

发表于:2018-12-24 / 阅读(390) / 评论(0) 分类 Scientific American(二)月

By Steve Mort Fort Lauderdale, Florida 13 September 2007 Parts of the United States are facing a shortage of sand, and officials are working on innovative ways to fix the problem. In Florida, experts say beach erosion caused by a rising sea level and

发表于:2019-01-06 / 阅读(308) / 评论(0) 分类 2007年VOA标准英语(九月)

Grammar Girl here. Today's topic is whether--not rain or sunshine, but whether w-h-e-t-h-e-r, as in whether you like it or not, it's the topic. [Listener question about if versus whether and whether you need an or not after whether] Well, it's been a

发表于:2019-01-07 / 阅读(318) / 评论(0) 分类 英语语法 Grammar Girl

The White House says it doesnt want Americans to stop traveling just to be vigilant about their personal security. As NPRs Scott Horsley reports, the Obama administration is trying to tamp down fears a day after it warned US citizens in Europe of the

发表于:2019-01-08 / 阅读(281) / 评论(0) 分类 2010年NPR美国国家公共电台10月

Most people feel nervous prior to giving a speech. This is human nature and indeed some degree of nerves is absolutely essential to remain alert and deliver the speech clearly. However nerves do become a problem if they are debilitating in any way. T

发表于:2019-01-08 / 阅读(329) / 评论(0) 分类 英语小短文

Everybody knows that the dice are loaded 每个人都知道骰子被灌了铅 Everybody rolls with their fingers crossed 每个人都知道跟着他们手指的方向走 Everybody knows that the war is over 每个人都知道战争已经结束 Everyb

发表于:2019-01-10 / 阅读(390) / 评论(0) 分类 美国偶像 American Idol

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster: new standards for English learners in American public schools. RS: One in nine public school students is a non-native English speaker; in twenty years, it could be one in four. Th

发表于:2019-01-18 / 阅读(342) / 评论(0) 分类 英语单词大师-Word Master

Books and Arts; American art museums; A hinterland beauty; 文艺;书评;美国艺术博物馆; 腹地美景; Moshe Safdie and some intelligent curatorial work have produced a rural gem; 摩西萨夫迪和一些聪明的策展工作创造了一个田

发表于:2019-01-27 / 阅读(343) / 评论(0) 分类 经济学人文艺系列

德国杂志揭示了美国国家安全局黑客入侵手段 LONDON - A German magazine lifted the lid on the operations of the National Security Agency's hacking unit Sunday, reporting that American spies intercept computer deliveries, exploit hardw

发表于:2019-01-31 / 阅读(392) / 评论(0) 分类 英语新闻

A major conference, The 2015 Conference on Big Data Index of Culture and Entertainment Industry, was held on Friday in Beijing, during which awards were given to the most talked about TV series, online dramas, movies and variety shows in China. Stand

发表于:2019-02-01 / 阅读(306) / 评论(0) 分类 实用英语

Everybody knows that the dice are loaded 每个人都知道骰子被灌了铅 Everybody rolls with their fingers crossed 每个人都为自己的命运捏了一把汗 Everybody knows that the war is over 每个人都知道战争已经结束 Everybody

发表于:2019-02-01 / 阅读(349) / 评论(0) 分类 听歌学英语

Dangling bonds 悬挂键 Dark current 暗电流 Dead time 空载时间 Debye length 德拜长度 De.broglie 德布洛意 Decderate 减速 Decibel (dB) 分贝 Decode 译码 Deep acceptor level 深受主能

发表于:2019-02-05 / 阅读(338) / 评论(0) 分类 实用英语

Up to 480 thousand residents in the American state of West Virginia have been affected by a chemical spill that leaked into the states water supply. At least one fourth of the population has been affected by the spill. The president of a West Virgini

发表于:2019-02-07 / 阅读(269) / 评论(0) 分类 CCTV9英语新闻2014年01月

You Can Beat Depression by William Thomas Buckley Depression has always been considered a disease of life's middle or later years, but doctors are now reporting a surprising surge in cases among younger people. Why is depression striking earlier and

发表于:2019-02-07 / 阅读(312) / 评论(0) 分类 实用英语

JUDY WOODRUFF: When it comes to the battle against the Islamic State, much of the world's attention is focused, of course, on the murders and the mayhem it has wrought. But there have also been a series of attacks on antiquities and cultural heritage

发表于:2019-02-17 / 阅读(325) / 评论(0) 分类 PBS访谈社会系列

考研 http://www.kuakao.com/完型,大家都非常熟悉的题型,但在这一部分,真正得高分同学非常少,因为它非常难。难就难在我们大家必须要掌握雄厚的语言基础实力和理解上下文语句的逻辑推理和

发表于:2019-02-17 / 阅读(271) / 评论(0) 分类 考研英语

It's a stat that gets bounced around as e-mail-forward wisdom: men think about sex every seven seconds. Even when the idea lacks this mythical specificity and grandiosity (that's 7,200 times a day!), the idea that men think about sex basically all th

发表于:2019-02-17 / 阅读(293) / 评论(0) 分类 阅读空间

1959: The Year That Changed Everything A crowd gathers in New York's Times Square to usher in the New Year, 1959. The importance of what future met them that year is still being debated. How Significant Will 2009 Appear in the Lens of History? Jeff G

发表于:2019-02-18 / 阅读(408) / 评论(0) 分类 阅读空间

Now, have any of y'all ever looked up this word? 好,你们中有谁查过这个单词? You know, in a dictionary? Yeah, that's what I thought. 用字典?是的,我想也就这个样子。 How about this word? Here, I'll show it to you. 这个单

发表于:2019-03-04 / 阅读(350) / 评论(0) 分类 TED演讲教育篇

For years, I had resisted medication, making many, many efforts to get off. 这些年来,我一直反对用药,为此会付出一切。 I felt that if I could manage without medication, 我感觉到我不服用药物也可以保持 I could prove

发表于:2019-03-04 / 阅读(318) / 评论(0) 分类 TED演讲教育篇
学英语单词
achadas da cruz
adverse conditions
aircraft carburetor
anthologize
antitabetic
arc form vessel
armillary
auto decrement deferred mode
average quarter hour rating
betke
beyond control
bill department
boarfish
boorish
Bravo, Sa.
brick field,brickfield
Brokenburg
butter-ham
can divider
capacitance synchronism
cementing substance
charka
communal garden
conagher
condition load
cotectic crystallization
dealated
dinmore
dishdasha
dns client
e.c.j.
enveloped
external taper of spindle
family hydrocharidaceaes
feminist movements
flexible tube valve
frothinesses
fuel feed port
generalized reciprocity
gooseherds
hair dressing tool
high-gain imaging array
hillwomen
huddle over
impulse transformer
increment of sun's right ascension
individual axis acceleration
internal user
Jaworski's corpuscles
Ketelin
labour troubles
lacrimal secretion anomaly
locally convextopology
logically-connected terminal
Machiakow limestone
milling shop
Miteja
morishe pike
Newfy
norathyriol
one armed robot
Parry Sd.
payle
phaseoliform
pictoriality
pleasurement
porpoise oil
poynting's vector
pulsed laser rangefinder
pure alkyd resin
quartz crystal monochromator
quasi-general average
Rauvolfia cubana
real reality
relph
riella
rotary screen printing machine
self-in-duced vibration
settlement funds
smallfry
solvent membrane
split-field range finder
standing backstay
stashin'
statvolt
syntagme
three-stater
tone languages
toximeter
transvaluations
transverse balance
transverse circulating current
tweendeck
twin bed
unbared
unfilm
unilinx
visual jokes
whiskey bottles
wonder about
wonder wonder out loud
zip tie