双氮化合物;重氮化合物

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(351) / 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(71) / 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(116) / 评论(0) 分类 美联社新闻一分钟2011(八月)

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(84) / 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(114) / 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(123) / 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(68) / 评论(0) 分类 Scientific American(十)月

AA: I'm Avi Arditti. Rosanne Skirble is away, but joining me from Los Angeles is English teacher Lida Baker to explain our topic on Wordmaster this week. It's a feature of the language called compounding. LIDA BAKER: Compounding is when we take two w

发表于:2018-12-30 / 阅读(63) / 评论(0) 分类 词汇大师(Wordmaster)

AGRICULTURE REPORT – March 5, 2002: Herbs By George Grow This is the VOA Special English AGRICULTURE REPORT. Small plants called herbs have many uses. Some herbs are used in cooking to make foods ta

发表于:2019-01-02 / 阅读(78) / 评论(0) 分类 农业与发展

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(67) / 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(95) / 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(161) / 评论(0) 分类 Scientific American(三)月

AA: I'm Avi Arditti. Rosanne Skirble is away, but joining me from Los Angeles is English teacher Lida Baker to explain our topic on Wordmaster this week. It's a feature of the language called compounding. LIDA BAKER: Compounding is when we take two w

发表于:2019-01-18 / 阅读(50) / 评论(0) 分类 英语单词大师-Word Master

Judging a Book by Its Odor A study in the journal Analytical Chemistry identifies various organic compounds that old books give off and that can be analyzed noninvasively, offering important clues to an historic work's condition and prognosis. Steve

发表于:2019-01-30 / 阅读(168) / 评论(0) 分类 60秒科学

AA: I'm Avi Arditti. Rosanne Skirble is away, but joining me from Los Angeles is English teacher Lida Baker to explain our topic on Wordmaster this week. It's a feature of the language called compounding. LIDA BAKER: Compounding is when we take two w

发表于:2019-02-14 / 阅读(96) / 评论(0) 分类 英语单词大师-Word Master

AA: I'm Avi Arditti. Rosanne Skirble is away, but joining me from Los Angeles is English teacher Lida Baker to explain our topic on Wordmaster this week. It's a feature of the language called compounding. LIDA BAKER: Compounding is when we take two w

发表于:2019-02-14 / 阅读(42) / 评论(0) 分类 英语单词大师-Word Master

进行英语面试时,面试官会问到,你为什么觉得你胜任这项工作。那么你的回答就要让面试官相信你能把这份工作做好。本文列出了一些常见的问题和回答,仅供参考。 I (Interviewer 面试者) A

发表于:2019-02-18 / 阅读(123) / 评论(0) 分类 实用英语

Hey Don, do you like asparagus? Yep, I love it Yael, can't get enough. But don't you notice there's a certain problem after you've eaten it? Problem? Yeah, everybody knows that eating asparagus can cause a rather unpleasant smell in your urine. I did

发表于:2019-02-23 / 阅读(43) / 评论(0) 分类 英语时差8,16

But thats what comes out after we eat asparagus, which is not necessarily the same was what went in. Our digestive systems do some pretty complex chemistry, you know. Plus, the act of cooking the asparagus probably changes the chemistry around a bit,

发表于:2019-02-23 / 阅读(65) / 评论(0) 分类 英语时差8,16

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(147) / 评论(0) 分类 莎士比亚十四行诗全集
学英语单词
2n
academie
adpositionally
aeroplane span
aging stability
all possible regression
art work on light box
backake
ballet workshop
bande-kercnde
bertenthal
board-and-brace work
bouncing Bets
boxing-matches
brimacombe
Canaanite inscriptions
cash-in-hand
celioactasia
chachapoyas
colophina clematis
combination arc
Cotoneaster hebephyllus
critical absorption wavelength
Curcuma yunnanensis
customer-driven government
cut and cover tunnel
dedentum cone
deduct a percentage from a sum of money
design factor
development inhibitor-releasing coupler
diiodine
Diospyros zhenfengensis
dynamic storage cell
Działdowo
eaglehawks
Eastwooding
educational pattern
elmhorst
farsightedly
flywheel rim
genus Erythroxylon
genus Mylodon
Goliath birdeater
group field
hart cranes
hcloes
hexenmeister
holsome
intussuscepting
Kaedong
lawful occupier
legitimature
lethane 60
liquefied gas tanker operation
locus nigers
lovozerite
man-machine control
microseismic movement
moerman
molson
multiplicative breakdown
Niedergörsdorf
nonsleep
nonspalling
ogadens
oil scraping ring
oligophyllous
Oyo empire
pendular water
permanent base level
phase age (of tide)
plain water
plunger compartment
pneamatic space
proctoscope
programmed timer
publical
Quanzhou kilns
Rhodes scholar
Rhodocista
ribas
rougerie
shot instant
size of number
spirono-lactone test
standard multimode fiber
starting duration
Staudinger's hypothesis
symptomatic paramyotonia
synchro-duplexing pulse
technicolor symmetry
there's safety in numbers
thiep
three-lane road
ultrasonic cataract
uninterrupted production
unshrived
ventilated roof
Wardrop's methods
windrock
yellow(y)