非极性化合物

This is the VOA Special English Development Report. Right now, the top story in AIDS research involves newly announced findings about adult male circumcision. Two studies in Africa found that circumci

发表于:2018-11-27 / 阅读(370) / 评论(0) 分类 2006年慢速英语(十二)月

Could there be a substance that both gives us the munchies and can help combat obesity? There may indeed be, according to research published in the Proceedings of the National Academy of Sciences. The Monell Center in Pennsylvania partnered with Kyus

发表于:2018-12-02 / 阅读(89) / 评论(0) 分类 Scientific American(十二)月

1. Parts of North Carolina all the way up to Massachusetts have been rattled by an earthquake. The 5.9-magnitude quake was centered in Virginia and has caused minor damage and some injuries. 2. Hundreds of Libyan rebels have stormed one of Muammar Ga

发表于:2018-12-15 / 阅读(137) / 评论(0) 分类 美联社新闻一分钟2011(八月)

A new study has found that the Arctic's iconic polar bears are finding it harder to hunt for food due to melting sea ice caused by climate change, putting the species at a growing risk of extinction. Researchers from the United States Geological Surv

发表于:2018-12-24 / 阅读(104) / 评论(0) 分类 2018CRI中国国际广播电台

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Generations of American children have been told, Eat your broccoli! And for decades, researchers have known that broccoli and related vegetables like cauliflower and water

发表于:2018-12-24 / 阅读(100) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute. Compounds found in the herb thyme have antibiotic properties. Now scientists have demonstrated that thyme might have a future role in fighting acne. A

发表于:2018-12-24 / 阅读(136) / 评论(0) 分类 Scientific American(三)月

Ever wondered why mosquito eat some people up but leave others relatively unscathed. a new study find this prefential treament due to smells produced by the microscopic critters that cover our bodies. the reaserch is in the journal public library sci

发表于:2018-12-24 / 阅读(143) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Take a deep breath. Taste anything? Actually, your lungs may, because scientists have discovered that the same receptors that exist on the tongue to tast

发表于:2018-12-24 / 阅读(81) / 评论(0) 分类 Scientific American(十)月

Seventy-nine degrees north latitude is near the top, at the cold edge of the world. In the winter, when temperatures plunge below freezing, there is complete darkness at noon. During summer, the sun shines at midnight, there is no place to hide. Dang

发表于:2018-12-30 / 阅读(211) / 评论(0) 分类 国家地理2007年

She worries a lot. She worries about polar bears. They are big, white bears. They live in the north. They need snow. They need ice. They need cold weather. There is too much pollution. Pollution heats up the Earth. Heat melts the ice. The ice is the

发表于:2018-12-31 / 阅读(146) / 评论(0) 分类 儿童英语小故事

This book stinks! is really a bad review. But even a classic work can start to smell when it gets old enough. Now chemists have developed a technique that identifies what kind of degradation process an old book or historical document is going through

发表于:2019-01-08 / 阅读(88) / 评论(0) 分类 Scientific American(十一)月

This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? The 2010 Nobel Prize in Chemistry goes to the University of Delawares Richard Heck, Purdues Ei-ichi Negishi and Hokkaido Universitys Akira Suzuki for their work in develop

发表于:2019-01-08 / 阅读(110) / 评论(0) 分类 Scientific American(十)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Wine can help keep conversation flowing at a dinner party. And now it looks like that wine may aid in materials science as well. Japanese researchers dis

发表于:2019-01-08 / 阅读(179) / 评论(0) 分类 Scientific American(三)月

BBC Learning English Weekender Polar Explorer Amber: Hello, I'm Amber, and youre listening to bbclearningenglish.com. In Weekender today, we listen to an interview with explorer, Rosie Stancer. In March, Rosie sets off on her latest expedition walki

发表于:2019-01-16 / 阅读(121) / 评论(0) 分类 Weekender

STOCKHOLM, May 8 (Xinhua) -- The 2012 Swedish Polar Music Prize was awarded to the American singer-songwriter Paul Simon and the Chinese American cellist Yo-Yo Ma, the prize committee said in a statement on Tuesday. For five decades, Paul Simon has b

发表于:2019-02-09 / 阅读(85) / 评论(0) 分类 英语新闻

Voice 1 Thank you for joining us for todays Spotlight. Im Rebekah Schipper. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Sib

发表于:2019-02-14 / 阅读(77) / 评论(0) 分类 环球英语 Spotlight

The dogs were barking wildly at two smallcreatures playing in the moonlight. Polar bear babies! cried Annie. One roly-poly cub leaped onto the other. Then theyboth rolled through the snow. Hi, little bears! Annie called. The cubs jumped up and shook

发表于:2019-02-17 / 阅读(70) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

BEIJING, June 21 (Xinhua) -- China will launch a new icebreaker for use during an upcoming 2013 polar expedition, a senior oceanic official said on Tuesday. Both the new icebreaker and Xuelong (Snow Dragon), an icebreaker that operated in Antarctica,

发表于:2019-02-18 / 阅读(92) / 评论(0) 分类 英语新闻

Voice 1 Hello, Im Marina Santee. Voice 2 And Im Ruby Jones. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 A tall man stands s

发表于:2019-02-21 / 阅读(94) / 评论(0) 分类 环球英语 Spotlight

Why is my verse so barren of new pride, 为什么我的诗缺乏点晴之笔, So far from variation or quick change? 行文沉闷呆板,千篇一律? Why with the time do I not glance aside 为什么我的诗不顺应时尚, To new-found meth

发表于:2019-02-24 / 阅读(162) / 评论(0) 分类 莎士比亚十四行诗全集
学英语单词
a tough row to hoe
acoustic radiation pressures
actinomyces muris
ADP-ribosylation
allotment ledger
alternating repetition of stress
Aminoacephenone
artery of penis
ASCS (automatic stabilization and control system)
bar type current transformer
bear left(rigth)
bed-linens
behide
Birch I.
border-crossing
bottom squeeze moulding machine
car pooler
catechetics
chollas
convertile
diamminedichloroplatinum
distance formulae
doquaric
earth sillicon
edge bridging group
el-tee
ellermen
end-rolling hatch cover
Equin.
ether index
ethnolinguists
external screw
figure keyboard
flocked carpets
French harps
fuel-assembly levitation safeguard
glacigenous
graphite corrosion
grapoes
guejarite
hereditary telangiectasia
Heschl's gyrus
indigenous hydrocarbon
interlinkage flux
Ipyong-dong
isothermal compression
issuing organization
jotting down
kokil
krunking
kubursi
landing flare
langness
lindvall
lithium schist
Mannosylerythritol
material and technical supply
medium access control (mac)
Meringa
mezzo-relievo
milli-moles
morphological examination of sperm
noncausality
nonconvergent series
Petermann Ra.
phattest
play one's hand for all there's in it
pocketpussy
porcillin
portative
post-entry
pother
prenylflavonols
primary subtractive colour
pseudodictyosporium wauense
resin bonded magnet
roundheaded apple tree borer
salt lake cities
save one's face
screen-type mill
self unloading barge
self-refer
septic action
shgc
Ship Characterisation Board
spectrum of defects
subscopes
succourer
superposed drainage
swagbellies
tetrachromic
throttling cooler
time lag swich
top liquid level
uncompensaing ring adaptor
unemotionalities
versicolored
videotape production
Vienna definition method
voluntary chain (store)
wax melting and holding furnace
Yarnema