音标:[,rεərifi'keiʃən] ;
rarefication
[,rεərifi'keiʃən]
n.
= rarefaction

The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be foss

发表于:2018-12-01 / 阅读(211) / 评论(0) 分类 新东方背诵文选

Rare Minerals May Be in North Korea 稀有矿物质可能在朝鲜发现 Hello and welcome back. Im Jim Tedder in Washington. Today we are going to talk about something that is worth a lot of money, and it is buried in the ground. Were not exactly go

发表于:2018-12-16 / 阅读(128) / 评论(0) 分类 2014年VOA慢速英语(二)月

Libyan opposition forces are fighting for control of Sirte, the hometown of their avowed enemy, Libyan leader Moammar Gadhafi. The rebels have taken swift advantage of a U.N.-backed military campaign that is now under NATO command. Government forces

发表于:2018-12-16 / 阅读(176) / 评论(0) 分类 VOA标准英语2011年(三月)

STEVE INSKEEP, HOST: We have an investigation this morning of drug companies gaming a system designed to help desperate patients. It's a story of orphan drugs. DAVID GREENE, HOST: These are life-saving drugs that pharmaceutical firms don't develop be

发表于:2018-12-18 / 阅读(107) / 评论(0) 分类 2017年NPR美国国家公共电台1月

Rare but Deadly By Susan Brink /2005, U.S. News World Report . All rights reserved with permission. Distributed by Tribune Media Services International. Simple, cheap blood tests could save thousands

发表于:2018-12-19 / 阅读(191) / 评论(0) 分类 彭蒙惠英语

Pre-Listening Vocabulary rare: not common irrational: not reasonable classified: grouped by like qualities provoke: to excite or bother a living thing and cause a reaction initiate: to be the one to start something delicacy: a type of food that is ra

发表于:2018-12-28 / 阅读(105) / 评论(0) 分类 趣谈英语

By Malcolm Brown Washington 09 October 2007 A collection of newly available photographs is shedding fresh light on those who carried out the Nazi holocaust. The public now has the chance to see the contents of an album, thought to have belonged to a

发表于:2019-01-04 / 阅读(110) / 评论(0) 分类 2007年VOA常速英语(十月)

Roger Wilkison Libyan leader Moammar Gadhafi has hailed his first visit to Europe in 15 years as historic and followed up his renunciation of weapons of mass destruction with a pledge to work for worl

发表于:2019-01-04 / 阅读(211) / 评论(0) 分类 VOA2004(上)--各类新闻

Tensions between Switzerland and Libya are continuing to escalate as Libyan leader Moammar Gadhafi enacts a number of retaliatory measures to protest the recent arrest of his son and wife in Geneva. The son, Hannibal Gadhafi and his wife were arrest

发表于:2019-01-13 / 阅读(156) / 评论(0) 分类 VOA标准英语2008年(七月)

By David Byrd Washington 29 May 2008 For most Americans, badminton is a backyard game played at parties and barbecues. But for Eva Lee, it is very serious - she is one of five members of the U.S. Badminton team that will be competing for gold at the

发表于:2019-01-13 / 阅读(172) / 评论(0) 分类 VOA标准英语2008年(五月)

A son of Libyan leader Moammar Gadhafi met senior Bush administration officials Tuesday in another sign of improved U.S.-Libyan relations. Saif al-Islam Gadhafi sees Secretary of State Condoleezza Rice Thursday. VOA's David Gollust reports from the

发表于:2019-01-13 / 阅读(183) / 评论(0) 分类 VOA标准英语2008年(十一月)

Libyan leader Muammar Gadhafi has lashed out at the United States by likening the 1986 U.S. Strikes on Libya to Osama bin Laden's terror attacks on the United States in 2001. He was speaking Thursday in Rome, where he is on a three-day official visi

发表于:2019-01-13 / 阅读(172) / 评论(0) 分类 VOA标准英语2009年(六月)

Libyan head of state Moammar Gadhafi is in Mauritania, where he opened multi-lateral talks aimed at resolving the months-old political crisis there. Libya's leader Moammar Gadhafi (file photo) In his capacity as current head of the African Union, Li

发表于:2019-01-13 / 阅读(176) / 评论(0) 分类 VOA标准英语2009年(三月)

RareGadhafiFootageShowsLibyanDictator'sSofterSide Much of the world has seen the strong, loud and defiant side of the ousted Libyan leader. But there is another side, too. A family man with his granddaughter, recorded on home video found in Tripoli.

发表于:2019-01-13 / 阅读(141) / 评论(0) 分类 VOA标准英语2011年(九月)

RACHEL MARTIN, HOST: Scientists have developed a better test for a very rare brain disease. And as NPR's Rae Ellen Bichell reports, this test could lead to new ways to diagnose more common diseases like Parkinson's and Alzheimer's. RAE ELLEN BICHELL,

发表于:2019-01-16 / 阅读(147) / 评论(0) 分类 2017年NPR美国国家公共电台2月

By Barry Unger Washington 14 December 2007 The year 2007 saw the passing of many well-known international figures who left a lasting impression. VOA's Barry Unger takes a look back at some of these people. Jim Bertel narrates. Former Russian Presiden

发表于:2019-02-04 / 阅读(163) / 评论(0) 分类 VOA常速英语2007年(十二月)

By Melinda Smith Washington, DC 11 December 2006 watching Skipping Medications Skipping medications can be harmful The older we get, the more medications many of us seem to need to stay healthy. It takes more than just a good memory to keep track of

发表于:2019-02-06 / 阅读(163) / 评论(0) 分类 2006年VOA标准英语(十二月)

BEIJING, March 15 (Xinhua) -- China's restrictions on rare earth exports are justified and are in line with World Trade Organization rules, Shen Danyang, spokesman for the Ministry of Commerce, said Thursday. The policy aims to protect resources and

发表于:2019-02-08 / 阅读(138) / 评论(0) 分类 英语新闻

China is the world's largest producer and exporter of rare-earths. These are elements which are critical to the manufacturing of high-tech products, including smartphones, wind turbines and car batteries, among other things. However, the rare-earth i

发表于:2019-02-14 / 阅读(128) / 评论(0) 分类 2016CRI中国国际广播电台

Two extremely rare Bengal white tiger cubs have been born at the wildlife center of the Czech Republic's Liberec Zoo, and are proving popular with visitors. These tiger cubs weigh 6 kilos 13 pounds, and were born two months ago. White tigers are the

发表于:2019-03-12 / 阅读(218) / 评论(0) 分类 cctv9英语新闻2016年
学英语单词
active asset
adolescentes
aluminium alloy doorlock with knobs
amourists
anti-universe
arranged around pistil
astronomical-almanac
asulfurosis
be of no avail
betatropic
Carcaraňa, R.
Casabangan
Chabrac
charitable institution
child neglect
cholesterollowering
clithon chlorostoma
coalingite
contact wire splice
corroded mutant
cyclophophamide
dalbergia retusas
deley
Dirac-delta function
DNA circle
double post attack
drawbar safety lug
dust laying material
eel larvae
efficiency of gain
Elatostema gueilinense
escape expert
fabric reinforced polymer composite
family xylariaceaes
flap track
Gammavenin
graphite guide tube
guilty-pleasure
hailed from
half round moulding
head access
heavy storm
honor a cheque
human speech
i-broded
internal virtural address
interplanetary mediums
irrisory
joint access costs
junio
katal
Langkesi, Kep.
lever escapement
ligamenta intercuneiformia plantaria
listen with half an ear
loop forming element
Maquereau, Pte.au
Maronitic
Matetsi
medema
methaemoglobins
microwave relay
miniclier
morning coat
n-n'reaction
neutral wedge
pantropic virus
phenoxybutyronitrile
pre-commissioning check
proctoceles
pseudogeneric
puett
refractory metal base composite material
rhaphoneis rhomoides
rootstalks
rudraksha
safe-custody
sausfleame
Schnyder crystalline corneal dystrophy
service apron
set a limit
Silicon Beach
sknsh
southernization
sphenoid ridge meningioma
stirpicultural
striocortical syndrome
submicroscopic particle
sunfire
Suyog
Swinton
tannadar
temporal change
three address
trip attraction
turn back the calender for
u-tube reheater section
under-invested
underboiled
urethroscopist
valve regulated cell
word switch register