拓扑群同态

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

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

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)

Gay Rights Groups Push for Anti-Discrimination Laws George Ramirez and his partner German Roa have lived together for 16 years. Now, they are allowed to marry in Maryland, after voters there endorsed a law legalizing same-sex marriage. We want the op

发表于:2019-01-14 / 阅读(119) / 评论(0) 分类 VOA标准英语2012年(十二月)

Experts: Radical Groups Thrive on Popular Discontent WASHINGTON Islamist terrorism is surging in many places worldwide, including in Western societies. Governments are fighting to curb the spread of radical groups in the Arab world, and their influen

发表于:2019-01-14 / 阅读(141) / 评论(0) 分类 VOA标准英语2015年(五月)

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)

拓扑排序 topological sort 偏序 partical order 拓扑有序 topological order AOV网 activity on vertex network AOE网 activity on edge network 关键路径 critical path 匹配 matching 最大匹配

发表于:2019-02-01 / 阅读(158) / 评论(0) 分类 实用英语

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(143) / 评论(0) 分类 cctv9英语新闻2016年
学英语单词
acknows
action movies
acylglycerophosphoglucose
alieno nomine possidere
analog optical communications
appetizing food
astroclimatic
babinski signs
back tax
bailee for hire
basilicon Ointment
Berkeley Springs
bind sb. over to do sth.
bogdanov
Bosnian
bunchberry
calibrated oscilloscope
cell movement
Change tack
coolant impurity
coolant medium
cotoneaster frigidus lindl. himalayan cotoneaster
cotton yellow g
cross-functional
deballasting operation
declination axis
deformed cross-bedding
differencing test
disorb
display-storage tube
dizzle
dwarf tossing
electrified particle inspection
ensetes
epic-scale
errhysis
essenced
extravesical triangle
F-270
faraday effect (magnetic rotation)
fill
first grade
flow dynamics
frequency multiplier
glycemia
golden rain tree
grass waterway
greystoke
group closure of a subset
gutta-percha clay
high resistance glass fiber
Hoblitzelle
hourly machine rate
hypobaric and temperature test chamber
il (insulin-like)
infologic
interlinearize
L.Heb.
laryngemphraxis
latitude by sun's maximum altitude
launching shoe
logical link control type 3
make a peace
maryann
micro-floppy
moutet
national sports team
natural tolerance
nonannualized
over-eye
patrollers
Permanent Committee
Phebutyrazine
piezoelectric effects
plait of onion
plane figures
qualified accounts
quasi-stellar radio sources
radiofrequencies
rake up
rebound height
recombination index
regular maintenance of bridge and tunnel
Sedum celiae
shck interrogation
staggered heads
static J-H loop
steel shoe
streme
sub-set
swear blind
tank tactics
tetragyre
to turn...to advantage
trichloroethyl urethan
type doublet
uk telegraph
unbalanced force
upsurging
uricaciduria
Vaikam
wax apples