[网络] 氢氧基团;羟基组;羟基群

THIS IS AMERICA - Girl Groups' in Rock Music By Robert Brumfield Broadcast: Monday, February 02, 2004 (THEME) VOICE: Welcome to THIS IS AMERICA, in VOA Special English. I'm Phoebe Zimmermann. In the l

发表于:2018-12-07 / 阅读(136) / 评论(0) 分类 This is America

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e

发表于:2018-12-24 / 阅读(134) / 评论(0) 分类 Scientific American(六)月

Katia / Mexico speaker I prefer studying alone, because if I have to work on one particular issue, I stay as long as I need to, studying that part. So, I'd rather study by myself. Sunny / Korea speaker I think I prefer studying in groups, because I c

发表于:2018-12-28 / 阅读(150) / 评论(0) 分类 一起闲话英语-English Chitchat

Too often young Somali-Americans have made news for all the wrong reasons. Some young people have fallen victim to drug abuse or the appeal of gang violence. Others have turned to extremist ideology. But youth organizations in the American state of M

发表于:2019-01-02 / 阅读(125) / 评论(0) 分类 2017年VOA慢速英语(四)月

Erythromycin,红霉素 Azithromycin,阿奇霉素 Clarithromycin,克拉霉素 Fluoroquinolones and their derivatives (e.g. levofloxacin),多西环素(如:脱氧土霉素) Tetracyclines (e.g

发表于:2019-01-03 / 阅读(141) / 评论(0) 分类 医务英语

分集介绍:导数,商数,正弦和余弦 Derivatives.of.products.quotients.sine.cosine

发表于:2019-01-05 / 阅读(392) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

AS IT IS 2014-09-04 Rights Groups: Thailand Suppresses Freedom Thailands military and police have stopped the release of an independent report on human rights. The report examines human rights in Thailand during the first 100 days under military rule

发表于:2019-01-12 / 阅读(129) / 评论(0) 分类 2014年VOA慢速英语(九)月

By Meredith Buel Washington 01 February 2006 An expert on global terrorism says there are now up to 40 groups around the world trying to imitate al-Qaida and virtually all of them are intent on attack

发表于:2019-01-13 / 阅读(211) / 评论(0) 分类 2006年VOA标准英语(二月)

Two splinter paramilitary groups in Northern Ireland have given up their weapons to an international commission monitoring what is known as 'decommissioning.' The two groups have for decades been waging an armed campaign against British sovereignty o

发表于:2019-01-13 / 阅读(118) / 评论(0) 分类 VOA标准英语2010年(二月)

RACHEL MARTIN, HOST: President Trump signed several executive orders yesterday. One of them was related to abortion. His order restored something called the Mexico City policy, which bars U.S. funding for any international aid group that provides abo

发表于:2019-01-16 / 阅读(129) / 评论(0) 分类 2017年NPR美国国家公共电台1月

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster -- English teacher Lida Baker in Los Angeles talks about improving English pronunciation by understanding the idea of thought groups. RS: Thought groups are something we don't even

发表于:2019-01-18 / 阅读(112) / 评论(0) 分类 英语单词大师-Word Master

Voice 1 Hello. Welcome to Spotlight. Im Bruce Gulland. Voice 2 And Im Marina Santee. 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 The sun sets ove

发表于:2019-01-19 / 阅读(131) / 评论(0) 分类 环球英语 Spotlight

Colombia's largest armed rebel groups, the FARC and ELN, have met to strengthen their unification process. In a statement, the FARC says incidents which led to the distancing between the groups have been overcome. The FARC has also stressed the need

发表于:2019-01-19 / 阅读(122) / 评论(0) 分类 世界各地新闻集锦

By Steve Herman New Delhi 03 September 2007 Two ethnic groups from southern Nepal are claiming responsibility for Sunday's deadly bombings in the Himalayan nation's capital. VOA's Steve Herman reports from our South Asia bureau in New Delhi. Nepalese

发表于:2019-01-26 / 阅读(159) / 评论(0) 分类 2007年VOA标准英语(九月)

By Nick Wadhams Nairobi 31 October 2007 About 40 international aid groups have issued a joint appeal to the international community about the growing humanitarian crisis in Somalia. As Nick Wadhams reports from Nairobi, the groups say that security h

发表于:2019-01-31 / 阅读(127) / 评论(0) 分类 2007年VOA常速英语(十月)

By Selah Hennessy Goma 22 December 2007 A summit has been called in the Democratic Republic of Congo (DRC) to try to bring peace to the war-torn country. Conference organizers say they hope the meeting will initiate a dialogue between the army, reneg

发表于:2019-01-31 / 阅读(132) / 评论(0) 分类 VOA常速英语2007年(十二月)

By Claudia Blume Hong Kong 16 November 2007 Hong Kong-based human rights groups who recently returned from a fact-finding mission to the Philippines found that the frequency of extrajudicial killings in the country has gone down. Disappearances, howe

发表于:2019-02-08 / 阅读(150) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Noel King Kigali 19 October 2007 Congo's 2006 democratic elections were intended to usher in a new era of peace in the once war-torn nation. And while improvements have been seen in certain areas across the vast country, holdout armed groups in th

发表于:2019-02-08 / 阅读(238) / 评论(0) 分类 2007年VOA常速英语(十月)

Occupy Wall St which began in New York in September has spread around the world. By last Saturday, there were 2,668 groups in about 100 countries. Occupy protest groups have been in our main cities for the last six weeks but now councils are getting

发表于:2019-02-17 / 阅读(134) / 评论(0) 分类 新西兰英语

The practice of medical groups in China only emerged in recent years. It's when a number of doctors come together, they can carry out medical treatments independently, without being employed by any public or private hospital. Such a move is unconvent

发表于:2019-02-25 / 阅读(144) / 评论(0) 分类 cctv9英语新闻2016年
学英语单词
abomasal impression
absentmindedness
academy figures
all-rubber
annual improvement factor
antiradar coating
Ayurvedists
bell-jar exhaust
blubber oil
bokaye
bully for
capital flows and service payments
certification of record on appeal
claiver
COLTON
correlate equation
covering sickness
currency sign
cycle transfer
downy woodpecker
edathamil calcium-disodium
electrolytic lead
end of date
environment pollution merchanism
exta
fastigatum
fimbristylis aestsivalis vahl
fix asset system
flat battery
froebes
gaolage
gas reaction
genus Lomatia
Haplopappus gracilis
hearth type furnace
hepatogenic
high-head scheme
in stone
inoculative
interal articular femoral condyle
ionospheric propagation
Japscat
joint efforts
jools
key to disk system
kill-time
killian's bundle
liaoning province
life of rotor
marshall law of one price
mathematisable
maturement
mini-micro software
miscategorised
monoclinic axis
moulder's blacking bag
mountain ridge diffraction
MTPT
multiradiatus
ncmd
Neoliponyssus
new bridge
oesophagogastrostomies
outs-of-tune
Oxagine
pallet traffic
para-anilinesulfonic acid
Penrhyn Bay
porticos
postretinal fibers
precentorships
present value rate
pressure-height corrector
primrose l.
pure ideal
Pyrenees-Orientales
re-jiggers
reparse
repeating irrigation
Saijō-gawa
saturated intensity of magnetization
schultze
semi tandem rolling
semiconductor valve device
send to the wash
sepulchrals
sister humper
space walks
star-bright
synchronstroboscope
taking my breath away
technical plants
the weight of the world
trumpet-like
unatonable
undue sentence
unquoted share
vitrophyrite
war-ping drum
wennel
World War Three
yeees