[有机化学] 有机磷化合物

Grammar Girl here. Todays topic is the complex-compound sentence. Guest writer Sal Glynn writes: Most writers worth their fingertip calluses begin as avid readers. We read books, magazines, and websites indiscriminately until we start to notice the w

发表于:2018-12-07 / 阅读(224) / 评论(0) 分类 英语语法 Grammar Girl

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(189) / 评论(0) 分类 VOA2003(下)-农业与经济

Intonation can indicate completely different meanings for otherwise similar words or phrases. For example, an English teacher teaches English, but an English teacher is from England; French class is where you study French, but French class is Gallic

发表于:2018-12-27 / 阅读(163) / 评论(0) 分类 美式英语正音训练

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(153) / 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(209) / 评论(0) 分类 VOA2003(上)-科技先知

The US Environmental Protection Agency lists stormwater as the primary cause of water pollution in the United States. Roads, shopping centers and housing developments are generally seen as enhancing a community's quality of life. But they can also di

发表于:2019-01-07 / 阅读(152) / 评论(0) 分类 VOA标准英语2010年(八)月

It seemed like a good ideabecause rivers and ponds in Bangladesh were contaminated with bacteria, Bangladeshis switched to wells. But soon after, in the early 80s, researchers realized those wells were harming Bangladeshis with a new poisonarsenic. T

发表于:2019-01-08 / 阅读(165) / 评论(0) 分类 Scientific American(十一)月

AGRICULTURE REPORT - Scientists Find Compound in Smoke that Helps Seeds Grow By Mario Ritter Broadcast: Tuesday, July 20, 2004 This is Steve Ember with the VOA Special English Agriculture Report. A di

发表于:2019-01-11 / 阅读(206) / 评论(0) 分类 农业与发展

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(168) / 评论(0) 分类 农业与发展

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(177) / 评论(0) 分类 英语每日一词

AS IT IS 2015-03-15 Saharan Dust Feeds Amazon Rainforest 撒哈拉沙漠的尘土吹到亚马逊雨林 Large clouds of dust blowing off the Sahara desert can easily be seen from space. Joseph Prospero is with the University of Miami in the United Sta

发表于:2019-01-12 / 阅读(160) / 评论(0) 分类 2015年VOA慢速英语(三)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(174) / 评论(0) 分类 VOA标准英语2013年(一月)

The United Nation's World Food Program says rogue members of Somalia's extremist al-Shabab group attempted to raid its compound late Sunday in the Somali town of Wajid, about 300 kilometers northwest of Mogadishu. World Food Program spokesman, Peter

发表于:2019-01-14 / 阅读(235) / 评论(0) 分类 VOA标准英语2009年(八月)

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(162) / 评论(0) 分类 2017年NPR美国国家公共电台5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(154) / 评论(0) 分类 环球英语 Spotlight

What do these five words have in common: hotdog, fireworks, well-being, waistline, sunset and ice cream? They could all describe a fun holiday celebration. For example: My holiday was wonderful! I went to a friends party and we laughed, ate and had a

发表于:2019-01-21 / 阅读(254) / 评论(0) 分类 2018年VOA慢速英语(十二)月

By Elizabeth Carlassare. Todays topic is compound interest. Albert Einstein is often quoted as having said something to the effect that compound interest is the greatest wonder of the universe. Its an urban legend, but it packs some punch! In todays

发表于:2019-01-30 / 阅读(234) / 评论(0) 分类 货币英语

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(252) / 评论(0) 分类 农业与发展

HELSINKI, July 17 (Xinhua) -- A waste stack near the coast of the Baltic Sea is leaking considerable amount of phosphorous to the sea waters, Finnish environment ministry said on Wednesday. The Finnish Environmental Institute took samples from two ph

发表于:2019-02-08 / 阅读(154) / 评论(0) 分类 英语新闻

ISLAMABAD, Feb. 25 (Xinhua) -- The living compound of the former al-Qaida chief Osama bin Laden in Pakistan's northwest city of Abbottabad is being demolished, said one local media report. Local Urdu TV channel Express said that the front part of bin

发表于:2019-02-18 / 阅读(168) / 评论(0) 分类 英语新闻
学英语单词
acculturates
adenosin phosphoric acid
agl radar
anatipestifer
Apriona germari
assessment report
be out in left field
beneficial
benzon
beta distribution
Biedrzychowice
blitherings
bloody-mindedly
bottom of the blade
bradyknin
broad irrigation
callback pay
Caloosahatchee R.
changeless
cilantroes
commuter movement
constitutionally
double-beat valve
earthquake prevention subsidies
educational leave
electronic communications network
electronic counter-measure
eligible person
elliptocytary anemia
envelope machine
equilateral
expense and receipts
fauld
February
flax-stick
Fumal
geographical feedback
Gergovia
Good call!
hardware manufacturers association
herringbone-gear
high velocity supply air system
hockey games
hydraulic joint
hymenal caruncles
jawbone economy
kidfucker
Loss of Fish
low pressure mercury lamp
Lālsot
magneto strictive transceiver
malvaceaes
manpacks
medical clearance
meritest
natto
needle pushing-up device
nettable
nonstaging drive
Notospartium
Ol'chan
open' ship
operator's toll dialing system
paleoecological
parallel-chain crystal
payment on account
pedestrian refuge island
perspiratory
photoelectric nystagmography
photostories
pleurolophocercous
rail-mounted handling and transportation machine
real word
record series
rectangular amputation
refuelling satellite station
rem syndrome(reticular erythematous mucinosis)
ring scotoma
Ronuro, R.
rotating pole type magneto
serieant
shallow chest
shoulder knot
sports hall
stairer
stomiid
submarginal suture
substitution principle
TDM bus switching
TeldrinChlorpheniramine
tensing
the nfl
thermometric gas analyzer
thiane
thibaults
thread fungus
to brain
true alignment
ultramicrocut
variegatums
veterinary acumpuncture
wandering pronuclues