对胺柳酸

Lesson 15 Your passports, please. 请出示你们的护照。 Listen to the tape then answer this question. Is there a problem with the Customs officer? 听录音,然后回答问题。 海关官员有

发表于:2018-11-28 / 阅读(166) / 评论(0) 分类 新概念英语第一册

One of the leading researchers in the field of protein folding is David Baker of the University of Washington, in Seattle. 西雅图华盛顿大学的David Baker是蛋白质折叠领域研究者的领军人物之一。 For the past 20 years he and hi

发表于:2018-12-05 / 阅读(98) / 评论(0) 分类 经济学人科技系列

Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(208) / 评论(0) 分类 (科普英语)Earth and Sky

AS IT IS 2014-05-01 New York's Sherpas Mourn Everest Avalanche Victims 纽约的夏尔巴人哀悼珠穆朗玛峰雪崩的遇难者 Hello. Im Jim Tedder in Washington. Lets do it again. It is time to learn and improve your American English. Today we

发表于:2018-12-16 / 阅读(62) / 评论(0) 分类 2014年VOA慢速英语(五)月

Researchers Genetically Modify Corn to Increase Nutrition Researchers in the United States say they have discovered how to genetically engineer corn to produce a kind of amino acid usually found in meat. The result is a food with increased nutrition

发表于:2018-12-18 / 阅读(142) / 评论(0) 分类 2017年VOA慢速英语(十)月

Helen: Hello, this is Real English from BBC Learning English, Im Helen. Jean: 大家好,我是董征。欢迎收听地道英语。 Helen: In Real English, we look at words and phrases that you might not find in your dictionary. Jean: 和汉语一样,英语语言里也是有好

发表于:2019-01-02 / 阅读(91) / 评论(0) 分类 地道英语在线听

How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t

发表于:2019-01-02 / 阅读(249) / 评论(0) 分类 知性英语

SCIENCE IN THE NEWS - Killer Virus Brought Back From the Past, With the Hope to Avoid a New One By Cynthia Kirk and Caty Weaver Broadcast: Tuesday, October 18, 2005 (MUSIC) VOICE ONE: This is SCIENCE

发表于:2019-01-02 / 阅读(98) / 评论(0) 分类 科技之光

Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b

发表于:2019-01-03 / 阅读(128) / 评论(0) 分类 医务英语

Daily Life - Talking About a Past Event (C0095) A: Mike! Hey, how are you, man! Long time no see! B: Hey, Pat! Yeah, I havent seen you in ages! How are you? A: Im doing great! Its funny running into you like this. Just last week I ran into Matt as we

发表于:2019-01-06 / 阅读(73) / 评论(0) 分类 纯正地道美语

Rights Group Challenges US Security Policy on Airline Passenger Lists Jim Malone A leading U.S. civil liberties group has filed a legal challenge to a program that seeks to bar people with suspected l

发表于:2019-01-07 / 阅读(106) / 评论(0) 分类 VOA2004(上)--各类新闻

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Aspirin is a popular painkiller, and chances are you have some in your medicine chest right now. You might even have some in your flesh-and-blood, put-a-

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(一)月

This is the VOA Special English Economics Report. Greece's debt crisis has shaken investors in the United States and worldwide. They worry that it could spread far beyond Greece. On Thursday, a day after huge protests in Athens, the Greek parliament

发表于:2019-01-12 / 阅读(124) / 评论(0) 分类 2010年VOA慢速英语(五)月

U.S. stock prices edged higher Friday after the U.S. Senate passed the biggest overhaul of the nation's financial system since the 1930s. The Senate measure must be reconciled with a version passed earlier in the House of Representatives, but it stil

发表于:2019-01-13 / 阅读(74) / 评论(0) 分类 VOA标准英语2010年(五)月

Richmond Re-examines its Confederate Past As the United States marks the 150th anniversary of the start of the Civil War, many Americans are re-examining the conflict, especially in Richmond, Virginia, former capital of the Confederacy. During the Ci

发表于:2019-01-14 / 阅读(95) / 评论(0) 分类 VOA标准英语2011年(八月)

By Birungi Machrine Kampala 26 November 2007 Attacks using acid are becoming more frequent in Uganda. Up to 2003, there were only 145 recorded attacks, but over the last three years, there have already been 87. Survivors often suffer from severe emot

发表于:2019-01-16 / 阅读(168) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Peta Thornycroft Southern Africa 16 June 2007 Hours before the first South African-mediated talks between Zimbabwe's ruling ZANU-PF and the opposition Movement for Democratic Change (MDC) were due to begin in Pretoria, police in Harare seized the

发表于:2019-02-03 / 阅读(123) / 评论(0) 分类 2007年VOA标准英语(六月)

中国雇员Kathy忧心忡忡地去找美国同事Mark请教。 K: Hey Mark...do you mind if I ask you a couple of questions? Mark: No problem, I've got time. K: Great! Well, I'm going to Seattle for half a year. I'm attending a course at a universit

发表于:2019-02-04 / 阅读(123) / 评论(0) 分类 商务礼节美语

中国雇员Kathy要去美国考察,她找美国同事Mark了解美国文化,以免在待人接物的时候在礼节方面闹笑话。 K: If I'm using public transport...should I give up my seat if I see elderly people? M: Yes. I think that's pro

发表于:2019-02-04 / 阅读(114) / 评论(0) 分类 商务礼节美语

By Derek Kilner Nairobi 18 March 2008 Kenya's Parliament has unanimously approved a bill to amend the constitution to allow for a power-sharing agreement between the country's two main parties. As Derek Kilner reports from Nairobi, both sides have ex

发表于:2019-02-05 / 阅读(86) / 评论(0) 分类 VOA标准英语2008年(三月)
学英语单词
2-iodobutane
Abraum Salts
acidating agent
acoustic aphasia
adrenalized
agua frescas
amaril
APP770
Aqla
assistest
bifurcational valve
big city
bottom border
Brohard
camera bulbi posterior
caroched
coax wall slots
combined dipole
compound-turbine
current annual rate of interest
cyclometallations
Delta-cortef
eadi
embryo transfer
end of file card
enterocoelic
exposed aggregate surface
fee for land use
ferinest
filter range
Formosan languages
freezing in reaction
genve
Gojeb Wenz
harris band
Hernaria
hexarch
himba
hip-shooter
horrible nightmare
I/O-bound program
immediate early gene
interaction phase
Kiknurskiy Rayon
kitchen tongs
landing nets
loeser
lomilomis
long-turn
Löffingen
Malay Camphor
microsetella rosea
millimeter wave ferrite
mixed integer nonlinear programming
Muaralabuh
nahcalite
non-qualities
noncommitally
nondefinite
of great value
oscillating potential difference
palatopharyngealis
patching together
picciottoes
Piram I.
pointer-type indicator
pound-cake
project scheduling
psychoda duplilamnata
Ptilagrostis dichotoma
public service announcement
quinine eosolate
raised colony
Ramsay Sound series
random shot
recommend sb as
Redkino
regular cross section
relocation factor
research director
reverse-blocking pnpn-type switch
revolutionary proletarian nucleuss
right-hand grip rule of solenoid
sanatron circuit
schizotypal
scrooging
SITREP situation report
spare reamer
stabilometer design method
step-up motor
sulfur (s) ore
Swett, Pen.
swing boom
tachometer drive gear wheels
test in service
thermochemical reaction
time stationary process
total chain yield
turn-off
unblinkings
velocity and temperature of flue gas at the breeching exit
viduous