[化] 转动筛分机

神奇校车带领孩子们进入浩瀚的科学领域,游梭于生物科学、地球科学、太空科学、气象学、古生物学等各门学科中。被纽约时报评为最新鲜有趣、最富有创意和想象力的科学启蒙方式。孩子

发表于:2018-12-06 / 阅读(74) / 评论(0) 分类 神奇校车系列丛书

EXPLORATIONS - Scientists Call for Quieter Ships to Protect Whales BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. Our subject today is whales. We discuss a report on the effect of noise from

发表于:2018-12-07 / 阅读(112) / 评论(0) 分类 2011年VOA慢速英语(六)月

STEVE EMBER: Welcome to THIS IS AMERICA in VOA Special English. I'm Steve Ember. BARBARA KLEIN: And I'm Barbara Klein. This week on our program, we look at what some companies are doing to help their employees get healthy and stay healthy. We also ta

发表于:2018-12-07 / 阅读(133) / 评论(0) 分类 2011年VOA慢速英语(二)月

今天我们给大家介绍两个以 smoke为主的常用语。首先我们要讲的是:To go up in smoke. 大家知道,smoke就是烟。To go up in smoke是指某项工程,或某个交易没有取

发表于:2018-12-16 / 阅读(160) / 评论(0) 分类 美国习惯用语

Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel

发表于:2019-01-02 / 阅读(226) / 评论(0) 分类 (科普英语)Earth and Sky

IN THE NEWS – September 28, 2002: IMF-World Bank Meetings Protest By Caty Weaver (VOA Photo - R. Daguillard) This is Steve Ember with the VOA Special English program, IN THE NEWS. The International

发表于:2019-01-02 / 阅读(73) / 评论(0) 分类 教育与新闻

我们是否生来就乐观有余而现实不足?Tali Sharot与我们分享的最新研究表明:人类的大脑更倾向于接受乐观的信息,而这样的特点既对人有益又十分危险。

发表于:2019-01-05 / 阅读(149) / 评论(0) 分类 TED公开课:头脑游戏

13 May 2002, 14:14 UTC AGRICULTURE REPORT – May 14, 2002: Wood Chips Protect Waterways By George Grow This is the VOA Special English AGRICULTURE REPORT. American scientists are developing ways to l

发表于:2019-01-07 / 阅读(119) / 评论(0) 分类 农业与发展

SCIENCE IN THE NEWS – July 16, 2002: Foods That Protect Against Disease VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abou

发表于:2019-01-08 / 阅读(109) / 评论(0) 分类 科技之光

Technology Report - A Mobile App in Delhi Aims to Protect Women 科技报道 - 一款保护女性安全的手机应用程序 This is the VOA Special English Technology Report. 这里是美国之音慢速英语科技报道。 More than twenty thousand

发表于:2019-01-12 / 阅读(180) / 评论(0) 分类 2012年VOA慢速英语(一)月

UN says Journalists Need Greater Protection Reporting, risky business American war correspondent, Marie Colvin and French photographer Remi Ochlik were killed in Syria on February 22. They are among 65 journalists killed in the first five months of 2

发表于:2019-01-13 / 阅读(124) / 评论(0) 分类 VOA标准英语2012年(七月)

US Neighborhood Watch Volunteers Help Protect Communities Baruti Jahi, a longtime Washington resident and father, knows he can't take his family's safety for granted. I'm up at four in the morning looking out my window because my dog is barking, and

发表于:2019-01-13 / 阅读(122) / 评论(0) 分类 VOA标准英语2012年(四月)

RotavirusImmunizationProtectsPeopleWhoDon'tGetVaccine Rotavirus causes severe diarrhea that kills more than a half-million people each year, mostly very young children. A recently-introduced vaccine has proved to be very effective and has shown some

发表于:2019-01-13 / 阅读(112) / 评论(0) 分类 VOA标准英语2011年(九月)

Indigestion Can Protect Africa's Lions African lions are increasingly hunting domestic cattle. And many of them are being killed as humans retaliate. Now, in Botswana, a pilot project is underway to save the lion by making cattle taste bad. The king

发表于:2019-01-13 / 阅读(122) / 评论(0) 分类 VOA标准英语2011年(九月)

Fighting Poverty, Protecting Women from HIV Financially empowering young women in poor countries may help protect them against sexually transmitted diseases. A new study shows that addressing poverty can help prevent risky behavior. Poverty, a lack o

发表于:2019-01-14 / 阅读(103) / 评论(0) 分类 VOA标准英语2012年(二月)

M23 Rebels Urged to Protect Civilians Humanitarian agencies in the eastern DRC are scrambling to locate displaced civilians and provide assistance following the M23 rebel groups takeover of Goma. For years, the town has been the center of aid operati

发表于:2019-01-14 / 阅读(121) / 评论(0) 分类 VOA标准英语2012年(十一月)

Cameroon, Chad Team Up to Protect Wildlife The pact was signed by both governments in early August. It stipulates that the Central African neighbors will jointly manage over 300,000 hectares of protected area. They will be patrolled by an increased n

发表于:2019-01-14 / 阅读(129) / 评论(0) 分类 VOA标准英语2011年(八月)

BEIJING, Oct. 12 (Xinhuanet) -- Children who spend hours each day watching television or playing computer games have more psychological(心理的) difficulties than those who don't, according to a study published in the US journal Pediatrics(小儿

发表于:2019-01-31 / 阅读(145) / 评论(0) 分类 英语新闻

今天我们要学的词是screen。 Screen, 有检查的意思。All women over 50 should be screened for breast cancer regularly, 凡是五十岁以上的妇女都要定期进行乳腺癌的检查。 美国全国铁路客运公司将首度开始对乘

发表于:2019-02-04 / 阅读(136) / 评论(0) 分类 英语每日一词

By Jeff Swicord Cheyenne, Wyoming 10 September 2007 Workers at adairy farm There is growing concern that farms and ranches in the western U.S. could become the target of agroterrorism. The devastating outbreaks of foot and mouth disease in Britain a

发表于:2019-02-05 / 阅读(193) / 评论(0) 分类 2007年VOA标准英语(九月)
学英语单词
adynamia
aeromotor
aggregate supply and demand forcasting
aided ranging
air starting
american dwarf birches
anterior parasquamal tuft
any while
archil
basedowiform
boxier
brush up
business and management
calcic yermosols
Callahan County
chiasmi
circumspect
coupling network
crosswind sensitivity
cutting drawing
cydonia oblongas
data service manager
degree-days of heating period
desmosomal
distance judgement
doctrine of judicial preedent
doubting Thomases
edit text
equivocacies
euphorbia lathyriss
filament image
fingertip search
fishbowls
frame set
full band
gasoline content gage
general service signal
geometric broadening
glass harps
grille cover
groveport
hardbakke
hoisting apparatus
HP evaporator
in the frame
ISPCR
ISSC
Ivan Turgenev
jaason
kabc
Kittson
lamp check potentiometer
longcrofts
meromorphic transfer function
monofactorial inheritance
motive power machine
myelinoma
Namak, Daryācheh-ye
napperon
nitronaphthalenedisulfonic acid
of your own accord
oppressment
optical beam deflection
palmellaceous
permolybdic acid
piqued
polariscope tube
populus suaveolens fisch.
pseudo-paxillae
pubera
quadrature spectrum
quasi-cleavage crack
ratio
reference speed
rejoinder to the defence
relation table
rock cavity
rootzone
rostvet
sealed-tube
self - propelled gun
shock absorber recoil valve
shortcrust
shrink stress
source container
source rock index
south of china
spy upon
squared stone masonry
steam-gas power ratio
step counter
stripped gas
syntaxy
Tarfside
tetracyte
tongue depressors
transient conduction
unbunged
verhoevens
westward-bound
world distribution
zinc sulphate