内皮外细胞

What Is Progeria? Progeria was first described in the nineteenth century. The mysterious disease is often thought of as premature aging. Children with progeria are normal for their first year of life, but then develop medical problems normally seen i

发表于:2018-12-31 / 阅读(50) / 评论(0) 分类 英语听力文摘 English Digest

By Melinda Smith Washington, DC 22 June 2006 watch Stem Cell report A new medical treatment injecting embryonic stem cells and other drugs into paralyzed mice has researchers wondering if it could eventually help humans suffering from Parkinson's an

发表于:2019-01-09 / 阅读(116) / 评论(0) 分类 2006年VOA标准英语(六月)

A: Nice to see you; how have you been feeling lately? B: I have been feeling great, Dr. Smith. A: I am happy that you have decided to come in for your annual physical. B: Yes, I am going on a cross-country bike ride on vacation and want to make sure

发表于:2019-01-11 / 阅读(85) / 评论(0) 分类 英语情景对话-健康

A: Hello, so how are we feeling today? B: Things are going well for me, Dr. Smith. A: Am I correct in thinking that you are here for your annual physical? B: Yes, I am applying for new health insurance, and I need a physical examination to qualify. A

发表于:2019-01-11 / 阅读(90) / 评论(0) 分类 英语情景对话-健康

A: Good morning, how are you doing today? B: I have been feeling pretty good, Dr. Smith. A: So, I can see by your chart that you are here for your annual physical. B: Yes, I am playing on the tennis team this year, and they are requiring me to get a

发表于:2019-01-11 / 阅读(72) / 评论(0) 分类 英语情景对话-健康

By Efam Dovi Accra 23 August 2006 In Ghana, a high court in the capital Accra Tuesday sentenced five robbers to more than 300 years in prison in what the police say is a clear sign the country is taking violent crime seriously. The spate of armed ro

发表于:2019-01-11 / 阅读(155) / 评论(0) 分类 2006年VOA标准英语(八月)

This is the VOA Special English Health Report. How important is your mobile phone, better known to Americans as a cell phone? MAN: I use my phone all the time. I'm always on my phone. WOMAN: It's kind of pretty much important to me because it's like

发表于:2019-01-12 / 阅读(83) / 评论(0) 分类 2011年VOA慢速英语(三)月

Power Your Laptop by Taking a Walk Scientists at the University of Wisconsin-Madison have developed a technology that turns human motion into electricity. In this week's journal Nature Communications, they describe how to power a cell phone or other

发表于:2019-01-14 / 阅读(90) / 评论(0) 分类 VOA标准英语2011年(八月)

Scientists Point to Possible Health Effects of Cell Phones This past May, in a major policy shift, the World Health Organization said electromagnetic fields produced by mobile phones are possibly carcinogenic. Although the International Association f

发表于:2019-01-14 / 阅读(77) / 评论(0) 分类 VOA标准英语2011年(八月)

a butterfly with glowing eyes Believe it or not, Monteiro and her team insert ed a new gene into the butterflys genetic sequenceone taken from a jellyfish . No, I know you're fooling. Actually I'm not. This gene codes for a green florescent protein t

发表于:2019-01-26 / 阅读(56) / 评论(0) 分类 英语听力文摘 English Digest

Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm

发表于:2019-01-26 / 阅读(69) / 评论(0) 分类 英语听力文摘 English Digest

Fish live in water, but do they drink it? The answer is yes, but how fish drink water depends on where they live. Water gets into a fish's body through osmosis, the process in which water diffuses from a higher to a lower concentration. For example,

发表于:2019-01-26 / 阅读(67) / 评论(0) 分类 英语听力文摘 English Digest

Under normal circumstances, each of your brain cells allows various substances, such as sodium, calcium and potassium to permeate its outer cell membrane. Once inside the brain cell, these substances help give the cell stimulus it needs to function p

发表于:2019-01-26 / 阅读(59) / 评论(0) 分类 英语听力文摘 English Digest

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(211) / 评论(0) 分类 英语新闻

By Amanda Cassandra New York 09 November 2006 Movie star Robert Redford's Sundance Film Festival is teaming up with global cell phone operators to bring short films to cell phones to give people around the world access to independent films. Robert R

发表于:2019-02-05 / 阅读(100) / 评论(0) 分类 2006年VOA标准英语(十一月)

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(200) / 评论(0) 分类 趣味英语

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(154) / 评论(0) 分类 英语新闻

Topics: Alcatraz; The Simpsons; using negation with an infinitive; heaven versus heavens; kind of versus sort of versus type of Words: to escape guard jailbreak cover-up cell haunted animated dysfunctional family trouble-maker pacifier merchandise le

发表于:2019-02-23 / 阅读(49) / 评论(0) 分类 美语听力 English Cafe

How Cells Get Around 漫步的细胞 A major reason why many cancers are so dangerous is that they metastasize . This means that instead of staying in one place, the cancer cells migrate from their original site to other parts of the body. No wonder

发表于:2019-02-24 / 阅读(59) / 评论(0) 分类 英语听力文摘 English Digest

Topics: Types of prisons and the parole system; American cities: Austin; using prepositions with the days of the week; for the world to owe (one) something; late/early morning, afternoon, and evening Words: prison to pose a threat solitary confinemen

发表于:2019-03-05 / 阅读(174) / 评论(0) 分类 美语听力 English Cafe
学英语单词
a switch
actual growth
alvus adstricta
arraca
audit failure
austenitic manganese steels
average-sized motor
backcloth
banner cloth
block-group
bright hydrogen flocculus
building and fixed equipment
bulldoze one's way
burhels
Chloranthus serratus
chlorine bleaches
cigar band paper
compulsory settlement of international disputes
cryotolerance
dead end highway
Diabetamide
Dinit
discors mulitpunctatum
distension cyst
divisible inactive
double notched joint
elpenor
Emprote
ethanedithiol
Euphorbia ipecacuanha
exinitedurite
exponential family of full rank
firm gouge
foreign tourist
genus cardiums
genus dendranthemas
glass decolourizer
Glezos
good timing
Grubean
heting
indophenol oxidase
infinite form
integral parameter model
interior extrapolation method
International Air Traffic Communications Transmitter Station
Jenkinjones
jugale
khadafies
Lavardens
layds
lethargia
low-heating value
magnetic blast arc quenching
meat ware
mechanical compression
minettefels
minimum tolerance
N-entity
Nabidae
Niuhuang Jiedu Wan
non-operating income
one-toe
onpass
order for arrest
Orr-Sommerfeld equation
osmonditic
oxetorone
ozick
periphlebitic
pilo-erection
pinscreen
Portaferry
principle of occupier's liability
provisional diagnosis
pseudo computer language
Quercus kelloggii
queue equipment
rackt
reception of echoes
riabal
ring-sides
scraper trap
semifixed connector
settlement(sett.)
smelteries
sunagocia otaitensis
support post
takeout loan
Talovkite
telescoping valve
topological equivalence
transverse magnification
Traumatociclina
tremellaless
unkingdomed
unwepts
varadi
weather chart (analysis)
wittule
worsted spinning
wuchow