雏形

Health nbsp; Economics The big story for Washington for 2002 is going to be the November elections. And while that’s a long way off for the rest of the country, it’s very much on politicians- mind

发表于:2018-11-28 / 阅读(246) / 评论(0) 分类 疯狂英语2002年

Federal officials are focusing on manufacturing and processing facilities as they work to get to the bottom of a salmonella outbreak in eggs. The Food and Drug Administration says there haven't been many standards in place for farms like the two in I

发表于:2018-12-02 / 阅读(172) / 评论(0) 分类 2010年NPR美国国家公共电台8月

Christopher Reeve: A True Superman Christopher Reeve, the cinematic 1 Superman who became a real-life inspiration for people with spinal 2 injuries through his painstaking struggle to overcome total p

发表于:2018-12-05 / 阅读(347) / 评论(0) 分类 英语沙龙2004全年合辑下

Evidence is seen for a possible cause of solid tumors, but many questions remain. Transcript of radio broadcast: 24 June 2008 This is the VOA Special English Health Report. Some experts predict that doctors will someday use stem cells to treat many

发表于:2018-12-15 / 阅读(164) / 评论(0) 分类 VOA慢速英语2008年(六)月

Agricultural officials say they think an organic farm in northern Germany was the source of the deadly E. coli outbreak that has sickened more than 2,000 people in Europe. Twenty-two people have died. Investigators traced the bacteria to beansprouts

发表于:2018-12-17 / 阅读(184) / 评论(0) 分类 2011年NPR美国国家公共电台6月

In a landmark development within stem cell research, scientists say theyve used a cloning technique to make embryonic stem cells that match a patients DNA. The journal Nature highlights a study that shows the potential for using the technology to rep

发表于:2018-12-17 / 阅读(315) / 评论(0) 分类 2011年NPR美国国家公共电台10月

HEALTH REPORT - Gene Therapy Used to Treat Cancer | Stem Cell Study Leads to Criticism, QuestionsBy VOA Staffs Broadcast: Wednesday, September 06, 2006 This is the VOA Special English Health Report. A

发表于:2019-01-02 / 阅读(224) / 评论(0) 分类 2006年慢速英语(九)月

Macrophages - cells derived from monocytes which have the ability to phagocytose foreign particles and dead tissue and to move through tissue, or to remain fixed in one place. There are many macrophag

发表于:2019-01-03 / 阅读(208) / 评论(0) 分类 医务英语

Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

发表于:2019-01-03 / 阅读(202) / 评论(0) 分类 医务英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? One of the dreams of biomedical scientists is to be able to transform adult cells into other kinds of cells. And thus avoid some of the ethical concerns of working with

发表于:2019-01-08 / 阅读(219) / 评论(0) 分类 Scientific American(十一)月

President Obama says a preliminary agreement reached today with Russian President Dmitry Medvedev is an important step toward increasing nuclear security. We have signed a joint understanding for a follow-on treaty to the START agreement that will r

发表于:2019-01-08 / 阅读(177) / 评论(0) 分类 2009年NPR美国国家公共电台7月

HEALTH REPORT - New Embryonic Stem Cell Lines Developed for Researchers By Paul Thompson Broadcast: Wednesday, August 11, 2004 This is Gwen Outen with the VOA Special English Health Report. Researcher

发表于:2019-01-08 / 阅读(190) / 评论(0) 分类 健康与经济

This is the VOA Special English Health Report. Bethesda, Maryland, near Washington, D.C., is home to the National Institutes of Health. N.I.H. calls itself the Nation's Medical Research Agency. But it supports research worldwide with its budget of a

发表于:2019-01-11 / 阅读(172) / 评论(0) 分类 VOA慢速英语2008年(十一)月

AS IT IS 2015-11-02 Can Fish Teach Humans to Regrow Teeth? 人类能学习鱼类的牙齿再生术么? Most people are born with two sets of teeth. They use baby teeth to break down food as children. As they become adults, the baby teeth are replaced

发表于:2019-01-12 / 阅读(152) / 评论(0) 分类 2015年VOA慢速英语(十一)月

By Ted Landphair Washington 26 July 2007 For a second time in a year, President Bush has vetoed a bill that would have sanctioned federally funded stem cell research using human embryos. His stance reflects conservatives' view that destroying life to

发表于:2019-01-12 / 阅读(208) / 评论(0) 分类 2007年VOA标准英语(七月)

In the east African savanna, pools of water form during the rainy season only to dry up a few months later. Being a fish in one of these temporary ponds is a challenge. To survive, they race to maturity, with the shortest generation time of any verte

发表于:2019-01-20 / 阅读(159) / 评论(0) 分类 Scientific American(九)月

An end to grey hair and crows-feet could be just 10 years away after scientists showed 科学家发现,动物的衰老过程有可能逆转。 it is possible to reverse ageing in animals. 从此以后,可能仅需10年,人类就可以告别白发

发表于:2019-02-01 / 阅读(192) / 评论(0) 分类 趣味英语

今天我们要学的词是ethical。 Ethical, 合乎伦理道德标准的。 Elected officials should be held to the highest ethical standards, 民选产生的官员应该遵守最高标准的伦理和道德准则。 美国总统奥巴马星期一签署

发表于:2019-02-04 / 阅读(157) / 评论(0) 分类 英语单词荟萃

Finding a Healthier Lifestyle - Committing to Change Everyone wants to live a healthier lifestyle and everyone wants to look better in their swimsuit. However, many people don't know where to begin or what questions to ask. Six months ago I was in th

发表于:2019-02-08 / 阅读(271) / 评论(0) 分类 阅读空间

WASHINGTON, April 16 (Xinhua) -- Researchers at the University of Colorado (CU) have found that lack of a specific gene interrupts neural tube closure, a condition that can cause death or paralysis. The study was the cover story this week in the jour

发表于:2019-02-18 / 阅读(194) / 评论(0) 分类 英语新闻
学英语单词
a rat leaving a sinking ship
Andado
aqua
average value theorem
aviform
b-listest
blood brother
cannavinoes
capacitor modulator
carrying initiating signal
casualty effect
chromophil cells
Cibacen
come round to
communication controller node
continuous baling press
corn-cobs
cost of building
d'ecrire
defust
Department of the Environment
dishrags
draw a crowd
eco-glasnosts
edit statements
electric-blues
enfroward
Epimedium parvifolium
finished dimension
floating point processor register
garamycins
gel electrofocusing
genus myosotiss
Goussissaré
guessive
gynoroentgenology
head ache post
Horezmians
horny beak
humblebee
hypobasidial
Höfingen
inclined hoist
inconvertibly
invertible knot
Itchaway
labretifery
languorousness
lepidium bonariense
likeable
limit collar
Loire Valley
Lottstetten
low-cycle
Lt Col
magnetogranulation
maintain contact
marginal scutellar bristle
naive bayes
name it
nonmonadic
oliveros
omelettes
operands
oxidation-induced stacking fault
P'TASE
packshots
passionfish
peripatellapexy
phase-advancer
Phoenician alphabet
physic nuts
pittar
politically-motivateds
pollution flashover test
precise levelling
pressure ripple
profile valley
Rangitaiki
rectagraphs
refraction of water waves
rsmith
rubrific
Sallgast
Saussurea caudata
self-complementary counter
senatus-consulta
shudder to think
simple massed diverticulosis
sodium para-diphenylaminoazobenzene sulfonate
steam strainer spring
sweating stage
time-optimal rendezvous maneuver
to align oneself with sb
triumphator
twantie
unwomaning
working section substation
write one's own ticket
xylofuranoses
zirconate ceramics
zymogeneous flore