有机分子

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(96) / 评论(0) 分类 VOA2003(下)-农业与经济

This is scientific Americans 60 second science, I am Sophie Bushwick. got a minute. Tens of millions of years ago, cephalopods were hiding from their enemies in clouds of ink. And it turns out that cuttlefish today produce ink thats almost identical.

发表于:2018-12-24 / 阅读(49) / 评论(0) 分类 Scientific American(五)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(139) / 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(61) / 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(106) / 评论(0) 分类 VOA2003(上)-科技先知

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(96) / 评论(0) 分类 Scientific American(十)月

A melon field is pictured at a farm in the village of Djilakh, 80km south of Dakar, Senegal on 22 Apr 2008 (file photo) African farmers are making more money producing organically grown crops for European markets, where demand for healthier food is g

发表于:2019-01-11 / 阅读(69) / 评论(0) 分类 VOA标准英语2010年(四)月

AGRICULTURE REPORT — November 12, 2002: Organic Food Labeling By Mario Ritter This is the VOA Special English Agriculture Report. Last month, Secretary of Agriculture Ann Veneman announced a program

发表于:2019-01-11 / 阅读(72) / 评论(0) 分类 农业与发展

According to the Daily Telegraph of October 9, water ice and organic molecules that help to form the basis of life have been discovered on a second asteroid, called 65 Cybele, by astronomers。 The finding was reported at a meeting of planetary scien

发表于:2019-01-11 / 阅读(73) / 评论(0) 分类 阅读空间

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(78) / 评论(0) 分类 英语每日一词

AS IT IS 2016-10-05 Nobel in Chemistry Goes to Makers of Worlds Smallest Machines 2016诺贝尔化学奖:世界上最小的机器 Three scientists have won the Nobel Prize in Chemistry for their work in developing tiny machines. The three men are Jea

发表于:2019-01-12 / 阅读(83) / 评论(0) 分类 2016年VOA慢速英语(十)月

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(75) / 评论(0) 分类 VOA标准英语2013年(一月)

SCOTT SIMON, HOST: Organic milk is widely available these days, but what does that label really mean? A new Washington Post investigation found that there are considerable differences between the organic milk you can buy in a grocery store and the ki

发表于:2019-01-17 / 阅读(55) / 评论(0) 分类 2017年NPR美国国家公共电台5月

DAVID GREENE, HOST: This seems big. Scientists say for the first time they have clear evidence that the chemical building blocks of life exist on Mars. So is this the moment we can say there is life on the red planet? Well, NPR's Joe Palca says not y

发表于:2019-01-17 / 阅读(44) / 评论(0) 分类 2018年NPR美国国家公共电台6月

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(66) / 评论(0) 分类 环球英语 Spotlight

Even for NASA nebulae are too far away to visit, so they've built one of their own here on earth, 40 years ago scientists peered into the clouds of dust and gas created from the remains of stars, and to their surprise, found not just elements but org

发表于:2019-01-23 / 阅读(84) / 评论(0) 分类 探索与发现2015年

A Smooth Wake 平静的尾流 (A smooth wake on today's moments of science) Female: Donne and I are on a fantacy cruise . The sun has set and were standing on the rear deck. Look at the reflection of the moon. Male: You might expect a ship's wake

发表于:2019-01-26 / 阅读(53) / 评论(0) 分类 英语听力文摘 English Digest

AGRICULTURE REPORT – July 30, 2002: Chemicals on Organic Food By George Grow (Photo -Scott Bauer) This is the VOA Special English AGRICULTURE REPORT. Farmers who grow organic food do not use chemica

发表于:2019-01-30 / 阅读(83) / 评论(0) 分类 农业与发展

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(147) / 评论(0) 分类 农业与发展

By Jessica Berman Washington 19 March 2008 For the first time ever, astronomers using the Hubble space telescope have discovered the presence of the organic molecule methane in the atmosphere around a planet outside our solar system. While astronomer

发表于:2019-01-31 / 阅读(57) / 评论(0) 分类 VOA标准英语2008年(三月)
学英语单词
acidifies
acoustic bulkhead
aeschynanthus radicanss
ahwazs
AIR (automatic load regulator)
air-pollution
aircraft weight indicator
alarm
Albert, L.
anatolius
antimonious chloride
antismegmatis antibiotic
band-bang controller
basic bismuth gallate
canted angles
clay sculpture
coal cutter
complex optics
confessionless
corpus wolffi
covariance stationarity
curtailing capital construction
cut mixer
descriptive decision theory
did over
die wall life
drawing status
dubofsky
ectropodism
ednatol
electrically programable ROM
elihu thomsons
fat and oil
ferroelectric capacitors
flat-layer powder camera
flinchy
flying mare
fraternalization
funerary
gear teeth vernier
ginger knob
Grecian laurel
Haller's insula
hard-pan
head-capsules
himachalol
infraphylum
injury to
inverted takeover
italians
jerilyn
kicked down
Kintinian
large-scale retail business
least affine
liefs
luminous quartz resonator
Mali Zvornik
maturing agent
maxfield
mean value theorem of integral calculus
minuid
moneras
monoclinal rising wave
nefast crisis
network coordinating station
old-field
organic charge transfer complex
Parpi
pinhole collimation
Plalysternidae
pocketbike
polistes (polistella) eboshinus
pseudocontrol vector
pterophyte
raments
rankine-hugoniot equation
realismo
regular sampling
resistance-type level transducer
rows per inch
run-and-hit
SakSTAR
seemas
semicretinism
solar flux
stiff-bit
storage policy
supplier's surplus
Svyatsk
swim lane
thinned lubricant
tinnen
to pass the time
Toga-wan
toll automatic switching repeater
train dispatcher
uhlir
ultrarelativistic particle
uncouthie
unprofitable firm
unsaturated hydraulic conductivity