固定的有丝分裂后细胞

By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

发表于:2018-12-01 / 阅读(212) / 评论(0) 分类 VOA2003(下)-环境与健康

High-Tech Images Show How Viruses Infect Cells At the University of Texas Medical School at Houston, Jun Liu uses a powerful electron microscope to examine E. coli bacteria and the tiny T-7 virus that infects them. Liu says until now, scientists coul

发表于:2018-12-16 / 阅读(107) / 评论(0) 分类 VOA标准英语2013年(一月)

These are Dog Days at the US Post Office Have you heard of mail dogs? Not male dogs, as in the masculine half of the species. Dogs that actually carried letters and packages in the days of the Old American West. And pooches that tagged along with mai

发表于:2018-12-16 / 阅读(119) / 评论(0) 分类 VOA标准英语2011年(八月)

For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea

发表于:2018-12-30 / 阅读(175) / 评论(0) 分类 国家地理2008年

Symbiosis - a mutually beneficial inter-relationship between two organisms, for example between bees and flowers (pollen carrying in return for nectar). Sympathetic nerves - the sympathetic nervous sy

发表于:2019-01-03 / 阅读(106) / 评论(0) 分类 医务英语

factitial urticaria 人工性荨麻疹 film agent 膜剂 finger nail 指甲 fissure 裂隙 fixed eruptions 固定性红斑 folliculitis 毛囊炎 fungus 真菌 furuncle 疖 generalized pustular psoria

发表于:2019-01-03 / 阅读(166) / 评论(0) 分类 医务英语

Microbiology - the study of the microscopic forms of life. Microfilaments - are the smallest filaments of the cytoskeleton. The filaments are made of hundreds of actin molecules, stacked in a line. Th

发表于:2019-01-03 / 阅读(142) / 评论(0) 分类 医务英语

补充: CBR continuous bit rate CCIS common-channel interoffice signaling CCITT CCITT is the International Consultative Committee for Telephone and Telegraph, a consultative committee to the Interna

发表于:2019-01-03 / 阅读(136) / 评论(0) 分类 电信英语

A unique array of underwater listening devices stretches 3,000 kilometers along the west coast of North America to track marine life along the continental shelf. It's like giving fish a cell phone, says Pacific Ocean Shelf Tracking (POST) executive d

发表于:2019-01-11 / 阅读(158) / 评论(0) 分类 VOA标准英语2010年(九)月

The spread of cell phones, computers and other technology has increased economic growth in the developing world. Transcript of radio broadcast: 01 July 2008 VOICE ONE: I'm Barbara Klein. VOICE TWO: And I'm Steve Ember with EXPLORATIONS in VOA Specia

发表于:2019-01-11 / 阅读(132) / 评论(0) 分类 VOA慢速英语2008年(七)月

By Bill Rodgers Washington 19 May 2008 Cell phones are an example of what is sometimes now called leapfrog technology, a product that allows developing nations the benefits of a reliable and extensive communications network without the heavy investme

发表于:2019-01-13 / 阅读(129) / 评论(0) 分类 VOA标准英语2008年(五月)

U.S. Fed started a program with Mexico to enable money service businesses to send money to Mexico for a fixed cost of only 67 cents per transaction. 美国联邦政府和墨西哥之间启动了一个项目,使得汇款公司往墨西哥寄钱时只需

发表于:2019-01-18 / 阅读(92) / 评论(0) 分类 TED演讲商业篇

And good morning from the CNN Center here in Atlanta, I'm Melissa Long with some of the headlines that are NOW IN THE NEWS this Thursday. President Bush meets with General David Petraeus and the US Ambassador to Iraq Ryan Crocker today. They are exp

发表于:2019-01-26 / 阅读(160) / 评论(0) 分类 商业报道2008年(四)月

By Victoria Cavaliere New York 16 October 2007 An annual stem cell research conference in New York has been bringing together some of the field's top scientists to discuss breakthroughs in stem cell research and what proponents call its long-term app

发表于:2019-01-31 / 阅读(152) / 评论(0) 分类 2007年VOA常速英语(十月)

By Paul Sisco Washington 17 April 2008 Federal regulators in Washington have approved plans to upgrade the nation's Emergency Alert System to include text messages to cellphones and other mobile devices. VOA's Paul Sisco has more in this Searching fo

发表于:2019-01-31 / 阅读(153) / 评论(0) 分类 VOA常速英语2008年(四月)

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(297) / 评论(0) 分类 英语新闻

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

发表于:2019-02-07 / 阅读(261) / 评论(0) 分类 趣味英语

From today it is illegal to hold your cell phone and talk or text while driving. If you need to use a phone in the car, you must pull over to the side of the road and stop. You may instead use a hand-less phone which works when it hears your voice. T

发表于:2019-02-11 / 阅读(178) / 评论(0) 分类 新西兰英语

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(214) / 评论(0) 分类 英语新闻

今天李华和Larry 在谈暑假里打算干什么,李华会学到两个常用语:jack 和kaput。 LH: Hey Larry, 你知不知道纽约附近哪个地方可以钓鱼呀? LL: Fishing, huh? I'm s

发表于:2019-02-20 / 阅读(168) / 评论(0) 分类 美国之音《流行美语》
学英语单词
aceanthrylene
acetylcimifugosde
administrative-command
anionic exchanger
ashbaugh
auroral pulsation
bangladeshi monetary units
basophobic
bath and W.C.
beachcomber
bed regrading system
Braz.
break-even distance for highway transport
Brokenburg
cachrys
chargemaster
christ church
CIOP
combination weigher
commandible
confinement punishment
contingency financial plan
corporate vertical marketing system
cranked trailer
crystallographic microscope
deflection differences
departure controller
Didymocarpus cortusifolius
Difeandion
digital data
embossed glass
eternal rests
fantasy analogy
free running multivibrator
free-ion propagation
French pedicures
genotypings
geographical distant form
glaucophane schist facies
gloomed
high mobility
hodmen
Hycolin
hydraulically-controlled one-way valve
in her view
incircling
infrared tracking technique
kehlstein
Lowy's test
madow
make break system
maverick missile
method of current account
methylclhlorofonmate
Mohoro B.
money is no object
multifaceted self
multilateral trade negotiations
Never trouble trouble till trouble troubles you.
non-arithmetic use
on a knife-edge
one-child sterility
one-finger salutes
palmsters
paraffin chlorination unit
partack
perlarian
phenacylamine
presides
prospecting bore bit
pties
quardruplex system
radio-iodine
regulated investment company
rosite
rvm
sartorialist
scriptitation
show their colours
slot joint
small-type
soft cushioning
sorh
spur shoot
Streptcthrix
swallowed up
system-command language
take a left
team-based structure
thallous phosphate
the english dancing master
the floods
tin can
total income
touching the bottom
two-dimensional positioning system
two-dimensional stress system
unchurched
witchlikest
xenium
Yllästunturi
zinc sludge