na. 化合物
[网络] 化学化合物;化学组成

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(373) / 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(91) / 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(141) / 评论(0) 分类 美联社新闻一分钟2011(八月)

Honeybee stings are painful. But they're also fragrant. If a beekeeper gets stung by bees, it smells like banana. Dr. Stefan D?tterl, a plant ecologist at the University of Salzburg in Austria. That banana scent, he says, is a compound called isoamyl

发表于:2018-12-24 / 阅读(93) / 评论(0) 分类 2016年Scientific American(十)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(102) / 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(140) / 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(147) / 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(86) / 评论(0) 分类 Scientific American(十)月

Murchison Meteorite's Chemical Bonanza The 1969 Murchison meteorite was known to harbor complex organic compounds, but a new analysis in Proceedings of the National Academy of Sciences finds that it may also contain millions of chemicals and shed lig

发表于:2019-01-02 / 阅读(162) / 评论(0) 分类 60秒科学

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(94) / 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(113) / 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(184) / 评论(0) 分类 Scientific American(三)月

Coffee is one of the world's most widely-enjoyed beverages. Flavor aside, scientists have recognized it as a complex blend of chemical compounds with potential health effects, both good and bad. Now, new research suggests that if you drink enough cof

发表于:2019-01-13 / 阅读(81) / 评论(0) 分类 VOA标准英语2010年(七)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(69) / 评论(0) 分类 英语单词大师-Word Master

Chemical Rush Brian Mcfadden Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white Feel it coming on Like a pulse in my head Sending chills right

发表于:2019-02-07 / 阅读(107) / 评论(0) 分类 好听的英文歌曲

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(65) / 评论(0) 分类 英语单词大师-Word Master

音乐+爱情的化学反应:Chemical Rush Artist:Brian Mcfadden Song:Chemical Rush Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white F

发表于:2019-02-17 / 阅读(118) / 评论(0) 分类 流行英文歌曲

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(142) / 评论(0) 分类 实用英语

音乐+爱情的化学反应:Chemical Rush 还是Brian Mcfadden小编对BB的新专辑实在不能不执着啊~这首依旧是混杂了电子风的Chemical Rush,稍微有些中规中矩,和专辑中电音味道更重的歌比起来,有些收敛

发表于:2019-02-18 / 阅读(109) / 评论(0) 分类 英文摇滚歌曲

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(166) / 评论(0) 分类 莎士比亚十四行诗全集
学英语单词
a priorism
abbondio
acmic
antiballistic missile system
antirattler
anvstar (navigation star) nb (narrow band)
architectural limit
are you ready
assumed names
atomic adsorption spectrometry
Ban Xay
baseplate temperature
blasket sound
brittle damage
cantatrice
carrin's disease
cautires bulenoides
CG-R
Chuluut
clastics
clevacin
closed mould curing
code transparent data communication
computational economics
consumer durable goods
Crawfurdia crawfurdioides
danggui liuhuang decoction
delay machine
demodulation product
deoxyadenosine (dA,dAdo)
diatonic chord
digital transmission system
drepanum
ecological physiology of plant
ectosymbionts
electroformed sieves
enpsulation
enwrapping
euchelus instrictus
fibre reactant
first molar teeth
flow switch
formica pices formosae
freebooting
french-fry
furthered
gang of workmen
geostrophic momentum approximation
globe amaranths
granulocytopenia
ground radar aerial delivery
Herniaria glabra
hypercollinearity
insecticidal synergist
IP (identification of position)
irbesartan
janked
kabazo
Kopperå
leakageproof
London plane tree
loses it
malacologist
maximum transverse force
mother ship
mynas
nonauditory effect
obsterist
okras
panchery
penicilloside
periodic bill
planfile
polarization direction
QSP
radioactive snow-gage
radius of bend
rice milling wit
ruga of stomach
Ruweijil, Jezira
selfregard
sensory epilepsies
single key file
sparge pipes
symmetry axis of rotary inversion
Sättna
textured yarns
to the stars
Uncaria hirsuta
under-the-counters
unmercifulnesses
unthoughtfulness
unused name
vtecs
waist girth
watermelon begonias
wavebeam guide
wine-talk
without days of grace
yoders
zero bracket amounts