音标:[,reәrifi'keiʃәn] ;
n. 变稀薄, 稀薄
词型变化:名词复数形式 : rarefications

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(179) / 评论(0) 分类 新东方背诵文选

By Nick Wadhams Nairobi 26 July 2007 Four rare mountain gorillas have been killed after gunmen crept up on them and opened fire in the Democratic Republic of Congo's Virunga National Park. Nick Wadhams has more on the story from Nairobi. The gorillas

发表于:2018-12-08 / 阅读(146) / 评论(0) 分类 2007年VOA标准英语(七月)

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(120) / 评论(0) 分类 2014年VOA慢速英语(二)月

A: What can I do for you today? B: Can I sign up for some classes today? A: Which classes? B: I would like to take a driver's course. A: Would you like to make an appointment? B: Why do I need an appointment? A: You need to sign the paperwork. B: Can

发表于:2018-12-16 / 阅读(115) / 评论(0) 分类 英语情景对话-驾驶

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(96) / 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(176) / 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(89) / 评论(0) 分类 趣谈英语

by Michael W. Flynn First, a disclaimer: Although I am an attorney, the legal information in this podcast is not intended to be a substitute for seeking personalized legal advice from an attorney licensed to practice in your jurisdiction. Further, I

发表于:2018-12-30 / 阅读(124) / 评论(0) 分类 法律英语 Legal Lad

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2019-01-02 / 阅读(173) / 评论(0) 分类 午后咖啡

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(102) / 评论(0) 分类 2007年VOA常速英语(十月)

Nicholas Willis has won a bronze medal in the men's 1500-meter race at the Beijing Olympics. He is one of many athletes who lives in the United States but was born in another country. VOA's Jim Stevenson has more on the middle distance runner from N

发表于:2019-01-07 / 阅读(91) / 评论(0) 分类 VOA标准英语2008年(八月)

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(161) / 评论(0) 分类 VOA标准英语2008年(五月)

Rare Violins Play Starring Role in Concert Stradivarius instruments, especially Stradivarius violins, are known the world over for their exquisite beauty, unparalleled craftsmanship and extraordinary sound. Six of the rare instruments are owned by th

发表于:2019-01-13 / 阅读(103) / 评论(0) 分类 VOA标准英语2011年(十二月)

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(138) / 评论(0) 分类 2017年NPR美国国家公共电台2月

THE MAKING OF A NATION - May 23, 2002: The War in the Pacific By David Jarmul VOICE 1: THE MAKING OF A NATION, a program in Special English by the Voice of America. (Theme) American military planners

发表于:2019-01-19 / 阅读(168) / 评论(0) 分类 The Making of a Nation

Grammar Girl here. Today's topic is verbification. Last week police used a Taser on University of Florida student Andrew Meyer as they struggled to remove him from an auditorium where Senator John Kerry was speaking. The Web has been filled with deba

发表于:2019-01-30 / 阅读(187) / 评论(0) 分类 英语语法 Grammar Girl

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(123) / 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(104) / 评论(0) 分类 2016CRI中国国际广播电台

WASHINGTON, March 12 (Xinhua) -- The United States and China on Monday held the third round of Consultations on Asia-Pacific at the U.S. Naval Academy in Annapolis, Maryland. The closed-door consultations were co-chaired by U.S. Assistant Secretary o

发表于:2019-02-19 / 阅读(127) / 评论(0) 分类 英语新闻

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(204) / 评论(0) 分类 cctv9英语新闻2016年
学英语单词
absorbable hemostatic gauze
Ainsliaea macroclinidioides
al-hol
Aloadae
amidosuccinamic acid
andromeda galaxies
anti-blackout suit
antihypertensive
Aschner's reflex
ateriosan
auxiliary shears
auxodrome
Baja California Seamount Province
batch recycle cultivation
bfpo
Blaasveld
blind as a bat
boehmeria tricuspls mak.
bow shock
bugloss
buzzphrases
calcium rhodochrosite
Carsel lamp
cautious play
Celtis chekiangensis
centrifugal superfractionator
cerrtifying bank
Change links to
chlorogenic
conflicting levers
corynebacterium xerosus
counter flow heater
cow chain
Dalzic
delousers
diallel crossing (schmidt 1919)
diallogite
digestants
digestive efficiency
disease arising from yang
disk stripping column
durometers
east african coast current
Ebner's liquid
egg albumen
electric tracing
equatorial axis of source dipole
fall off one's chair
filling skewness
floating reamer holder
Flory-Huggins theory
function check machine
gang-up
Gaussian channel
genus dipteronias
genus leontodons
hyaenas hyaenas
immunological competence
in plant
key branches of the economy
lancet-shaped
linoleic acid ethyl ester
maistres
methylbutyry C-CoA
midsternum
necessary proposition
necropost
oxytropis hirta bunge
paper tape reader control unit
pimanthrene
piratically
podomere
primitive circulation
propulsion radius
pseudolimnophila marcia
pure cotton fabric
real options pricing models
receptacle plug
rohrbach's solution
roller-bearing gate
romboes
rubberiest
rule of the road at sea
sciolistical
sclerous reaction
seekie
shortwave diathermy machine
soies
sorting plant
Spanish empire
spillane
steam flow meter
subscan
surfwear
sweet-hot
Tebingtinggi, Pulau
tells on
tent trailer
trichostrongyliasis
wireless VoIP
wlite
xiphiline