音标:[iks'tri:mә] ;
extremum的复数
n the point located farthest from the middle of something
n the most extreme possible amount or value

extrema的用法和样例:

例句

用作名词(n.)
  1. Economists are usually interested in global extrema.经济学家经常碰到的是求整体极值。
  2. We shall subsequently obtain some interesting results on global extrema.我们将不断地得出关于整体极值的某些有用的结果。

Banks in Cyprus Remain Closed After Bailout Banks in Cyprus closed their doors on March 15, and they have not yet re-opened. The trickling cash flow already has taken its toll on the economy. Small businesses say they are doing very little trade, and

发表于:2018-12-08 / 阅读(64) / 评论(0) 分类 VOA标准英语2013年(三月)

我们似乎已经生活在一个没有国界限制的世界里,思想、物资和人都可以自由的在国与国之间通行。Pankaj Ghemawat将向我们指出,我们并没有那么全球化。通过大量的数据(和让人大开眼界的调

发表于:2018-12-09 / 阅读(95) / 评论(0) 分类 TED公开课:地球村

BBC Learning English London Life The Oldest Cinema Andrea Im inside Londons - and the UKs - oldest cinema, The Electric, in the West of London. Its very grand in here with gold and cream walls and red velvet carpets. And Im really looking forward to

发表于:2018-12-19 / 阅读(101) / 评论(0) 分类 伦敦生活

In other countries, women usually take the lead in cabaret. But here in Thailand many feel they are just not the right gender for the job. In Thai society, women are usually very prim and proper, this profession requires them to be outgoing, cheeky

发表于:2018-12-30 / 阅读(197) / 评论(0) 分类 国家地理2007年

麦粒 Miley Cyrus 做客 EMA 盛典深情献唱冠单《Wrecking Ball》! Miley Cyrus 唱的好动情,真心被感动到了!虽然形象变了,但她还是那个可爱的Miley,永远不变。 歌词: We clawed, we chained our hearts in v

发表于:2019-01-03 / 阅读(67) / 评论(0) 分类 流行英文歌曲

AMERICAN MOSAIC -July 12, 2002: Balloonist Steve Fossett / Songs by Rosemary Clooney / Question About Actor Bruce Lee HOST: Welcome to AMERICAN MOSAIC — VOA’s radio magazine in Special English. (T

发表于:2019-01-08 / 阅读(166) / 评论(0) 分类 American Mosaic

Todd: OK, Mark, I thought we would have a mock-debate. Mark: OK, sounds good. What are we debating? Todd: We're going to debate what is better - to watch a movie on DVD or at the cinema? Mark: OK, well I would definitely choose DVD. Todd: OK, I would

发表于:2019-01-11 / 阅读(105) / 评论(0) 分类 原版英语对话1000个

South Africa's parliament has elected African National Congress deputy president Kgalema Motlanthe as the third post-apartheid president of the country. VOA's Delia Robertson reports from our Johannesburg bureau, the new president made it clear he d

发表于:2019-01-12 / 阅读(143) / 评论(0) 分类 VOA标准英语2008年(九月)

In US, Few Roadside Attractions Remain In the first half of the 20th Century, state governments furiously built highways to accommodate Americans growing passion for the automobile. These roads were nothing like todays wide, high-speed interstates. T

发表于:2019-01-13 / 阅读(72) / 评论(0) 分类 VOA标准英语2012年(七月)

World Economy Remains Fragile The World Bank says four years after the start of the financial crisis, the global economy remains fragile. Growth in high-income countries remains weak. The bank recommends that developing countries not wait for rich na

发表于:2019-01-13 / 阅读(74) / 评论(0) 分类 VOA标准英语2013年(一月)

40 Years Later, US Abortion Opinions Remain Passionate To Jody Duffy, abortion is personal. As a young army officer, she was date raped. She had an abortion. Now, 30 years later, she carries a sign that reads: I regret my abortion. I will never judge

发表于:2019-01-13 / 阅读(101) / 评论(0) 分类 VOA标准英语2013年(一月)

Relations Between Washington, Moscow Remain Good Since the end of the Soviet Union 20 years ago, the United States and Russia have put many of their Cold War animosities behind them. They still have their differences, but they increasingly work toget

发表于:2019-01-13 / 阅读(94) / 评论(0) 分类 VOA标准英语2011年(十二月)

Immigration Remains Hot Topic in US Politics In the 2012 presidential elections in the United States, Hispanics could play a larger role than ever in determining who will occupy the White House. They are the fastest growing voting group in the nation

发表于:2019-01-13 / 阅读(65) / 评论(0) 分类 VOA标准英语2011年(十二月)

10YearsAfter9/11AfghanistanRemainsatWar Soon after the terrorist attacks on the United States on September 11, 2001, the U.S. and its NATO allies went to war in Afghanistan to drive the Taliban from power and root out al-Qaida terrorists hiding there

发表于:2019-01-13 / 阅读(74) / 评论(0) 分类 VOA标准英语2011年(九月)

Remains of Crashed US Helicopter Still Lie in Mogadishu Somalia, now in the grip of famine, is also remembered as the scene of the Black Hawk Down incident, in which two U.S. helicopters were destroyed and 18 American soldiers killed in 1993. One of

发表于:2019-01-14 / 阅读(92) / 评论(0) 分类 VOA标准英语2011年(八月)

In this report from Washington, Senior Correspondent Andr de Nesnera looks at Egypt's nuclear program and its stance on chemical weapons. With Egypt's political future still in limbo, analysts question whether Cairo's policy of not seeking nuclear we

发表于:2019-01-14 / 阅读(77) / 评论(0) 分类 VOA标准英语2011年(二月)

One Year On, India Fights to Remain Polio-Free To get a sense of how India was able to fight the highly contagious and crippling polio virus, one does not have to look any further than this home - in a Muslim-majority area of Ghaziabad, in the northe

发表于:2019-01-14 / 阅读(76) / 评论(0) 分类 VOA标准英语2013年(三月)

Somali Piracy Diminishes, but Networks Remain a Threat In the last decade, shipping off the coast of Somalia was subjected to relentless pirate attacks, the numbers peaking in 2011 with 176 reported cases. Now, though, international naval patrols and

发表于:2019-01-14 / 阅读(72) / 评论(0) 分类 VOA标准英语2013年(五月)

By Gary Thomas Washington 02 July 2007 The abortive car bombings in London and Glasgow have again put the spotlight on Britain as a terrorist target. Two car bombs failed to go off Friday in London, and on Saturday, a blazing car was driven at high s

发表于:2019-02-02 / 阅读(155) / 评论(0) 分类 2007年VOA标准英语(七月)

Voice 1 Welcome to Spotlight. I'm Mike Procter. Voice 2 And I'm Nick Page. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Hezron thinks it is fun to race

发表于:2019-02-21 / 阅读(100) / 评论(0) 分类 环球英语 Spotlight
学英语单词
abscisions
achieving
adventitial cell
air type servomotor
Alcomax alloy
AlixPartners
amortized
amphibious demonstration
anchor core
angle of hade
anti-skid wiring
antirebellion
Arlen, Michael
arteriae callosomarginalis
autarchic gene
billholder
biological coenoecology
branch of circuit
canvass customer opinions
carl l.
chickcharnees
compasssaw
consgt.
Cottonopolis
cut to
directors' fee
drawing apparatus
Dubovskiy
ductulus
dulciol
earth survey satellite
effective renal blood flow
electro-hydraulic elevator
empyemata
Farther India
fly-over
formal difference
fristing
frontier of science
FSCC
Gaultheria longiracemosa
gold miners
grinding head motor for woodworking
gunmen
gutter tile
Holinshed
hypersonic characteristics
input/output traffic table
iris fulva ker-gawl
Kedzierzyn-Kozle
Krull-Schmidt theorem
location-action corrosion
Los Pedroches
loxoscelism
make good work with sth
Mallinckrodt process
medium sodium water
method of spherical mean
moon phase corrector spring
mucouss
multiple reception
N. D. R. C.
nadims
Nietzschen
on-line central file
one-victory
optical avalanche laser
optical image
overaccelerated
picking them up
pickup pattern
picture timebase
pin saving design
pricking in one's thumbs
private key cryptography
public welfare
quadruple spiral
qualmishness
quaternate
remote terminals support
retro-spring
revisitor
Rice distribution
Rickettsiede
Rāmandrug
sensitizer ion
Shillim
shipping business
sialochemistry
spectral term
subordinate standard
sullyings
Sâmbǎta de Sus
temporary debits
tremendousness
trigeminocerebellar
uncollectible tax
uranotantalite (samarskite)
viscosity indicator
watch makers lathe
wheat root rot
white cigar