有机卤素化合物

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(387) / 评论(0) 分类 2006年慢速英语(十二)月

By Mario Ritter Broadcast: July 8, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Recently, a listener in Nigeria told us about an organization called World-Wide Opportuniti

发表于:2018-12-07 / 阅读(127) / 评论(0) 分类 VOA2003(下)-农业与经济

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(152) / 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(115) / 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(150) / 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(159) / 评论(0) 分类 Scientific American(一)月

Hard bargainers VS. soft bargainers Dialogue 1 A: We've got a problem...it looks like we'll need more spotlights on the exhibition booth. The client thinks it's too dark,and they want to add halogen lighting. We've already got 3 sets of track lighti

发表于:2018-12-31 / 阅读(104) / 评论(0) 分类 商务英语口语

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(177) / 评论(0) 分类 60秒科学

The United States space agency says its Mars exploration vehicle has discovered chemical substances necessary for life. Scientists reported that NASAs Curiosity rover found large amounts of organic molecules in 3.5 billion-year-old rock in an area ca

发表于:2019-01-03 / 阅读(92) / 评论(0) 分类 2018年VOA慢速英语(六)月

Broadcast: Mar 17, 2003 Rain hits the 1) shingles on the large covered porch that leads up to David Masumoto's farmhouse. From the porch he can see 90-year-old 2) raisin 3) vineyards his family has te

发表于:2019-01-03 / 阅读(145) / 评论(0) 分类 VOA2003(上)-科技先知

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(105) / 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(129) / 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(195) / 评论(0) 分类 Scientific American(三)月

今天我们要学的词是organic。 Organic, 有机的,绿色的。 Organic product, 有机产品。近年来,美国很多消费者开始崇尚绿色、有机食品。不过,统计数字显示, Organic food accounted for only 3.5% of the fo

发表于:2019-01-11 / 阅读(114) / 评论(0) 分类 英语每日一词

More Land Being Used for Organic Farming More land around the world is being dedicated to organic farming. The Worldwatch Institute says since 1999 theres been a more than three-fold increase to 37 million hectares. Organic farming is farming without

发表于:2019-01-13 / 阅读(109) / 评论(0) 分类 VOA标准英语2013年(一月)

紧凑型荧光灯 Compact Fluorescent Lamp 金卤灯 metal halide/halogen lamp 溴钨灯 Bromine tungsten lamp 汞灯 mercury lamp 钠灯 Sodium lamp 卤钨灯 Halogen tungsten lamp 碘钨灯 iodine tungsten lamp 氖灯/霓虹灯 neon lamp 石英灯

发表于:2019-01-17 / 阅读(124) / 评论(0) 分类 实用英语

Voice 1 Hello. Im Marina Santee. Voice 2 And Im Elizabeth Lickiss. 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 Milk chocola

发表于:2019-01-19 / 阅读(98) / 评论(0) 分类 环球英语 Spotlight

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(205) / 评论(0) 分类 60秒科学

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im

发表于:2019-01-30 / 阅读(180) / 评论(0) 分类 农业与发展

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(180) / 评论(0) 分类 莎士比亚十四行诗全集
学英语单词
aceria sylvestrae
anaplectella ruficollis
arctic pole
aridelus rutilipes
as big as a barn door
ascaridoses
athlete heart
atomicity operation
ballooner
bavachromene
Beadle -Tatum experiment
beetballs
Borovnica
bustling about
carvoeila
cheek protector
CHILODONTINAE
cleveland bay horse
closet augers
conical nut
croupal
curtain-ups
dare someone to do something
double-bazingas
drawing chamber
envigor
erucas
essential factors of production
essential service bus
faux-crocodile
fistulariidaes
Fritillaria omeiensis
gas-holder bell-type
glucogenesis
hand threshing
hangashun
harbo(u)r dues on vessel
heating water ratio
Hemsleyadinum
high level anticyclone
hydrazo compound
Hérémakono
immaterial averment
initial segment spike potential
iododeoxy-uridine
Jacob's-Staff
Jadib
jian
joinder in pleading
Laing
lift onto
linear metabolic pathway
local data package
Lonicera gynochlamydea
mica insert
mine-laying aircraft
mixed flow reactor
molybdenumpermalloy
monodispersed pollutant
narcotizations
nerves
Nobel elutriator
nonconservative
one-man one-vote
Paknampho
Pantherinae
pedalers
pereras
petiolarea
plannet
plano orbicular
PPCC
quick-firing tommygunner
radiatiform
recursive image restoration
refund of fare
rein-force
Rhynchosia volubilis
right-brained
sea satellite
sensory seizure
society of nuclear medicine
speed-change gear
Springfield Seamount
stell-
stockfish
strapworks
strip-wound
subterranous
sweep speed calibrator
system support
the pacific ocean
thiophilic bacteria
tout ensemble
treaty contracts
umbrels
upland meadow
Veronyl
vigintivirate
wind lock
Windows Mobility Center
Yeongdong