[胚] 胚胎表皮

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(135) / 评论(0) 分类 疯狂英语2002年

In New York City, no self-respecting woman would be caught dead without perfectly 1) manicured hands. The reason, hundreds of drop in nail bars all designed to have you 2) buffed, 3) polished now and

发表于:2018-11-28 / 阅读(154) / 评论(0) 分类 疯狂英语2002年

material scientists admire spider silk for being lightweight and strong.now another arthropod product is getting into the act insect cuticle,the tough flexible material is inside insect skeleton.researchers at harvard * institute for biological inspi

发表于:2018-12-02 / 阅读(118) / 评论(0) 分类 Scientific American(十二)月

Deep in the jungles of Guatemala lie the ruins of a lost Maya civilization. The culture thought of as the classic Maya flourished across Central America between 250-900 AD. But archeologists are now discovering a Maya society that existed a full thou

发表于:2018-12-05 / 阅读(81) / 评论(0) 分类 国家地理2007年

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(94) / 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(197) / 评论(0) 分类 2011年NPR美国国家公共电台10月

Counterfeiters and money minters constantly try to outsmart each other. But money could become much harder to forgethanks to butterfly wings. Butterflies that flit through tropical forests often have brightly colored wings that irridesce in the sun.

发表于:2019-01-02 / 阅读(65) / 评论(0) 分类 60秒科学

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(117) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science, I am Cynthia Graber. This will just take a minute. Counterfeiters and money minters constantly try to outsmart each other. But money could become much harder to forgethanks to butterfly wings. Butterfl

发表于:2019-01-08 / 阅读(95) / 评论(0) 分类 Scientific American(六)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(109) / 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(85) / 评论(0) 分类 VOA慢速英语2008年(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(122) / 评论(0) 分类 2007年VOA标准英语(七月)

名词词组与动名词 名词短语或动名词主句(或者从句)中做主语或者宾语。 A.语法复习由名词构成名词词组的几种方法 1. n. adj.短语,如the jobs available to women 2. n. 介词短语,如a child with readi

发表于:2019-01-18 / 阅读(54) / 评论(0) 分类 托福英语

When you think you've seen everything that could possibly be done with nail art, manicure devotees prove you wrong. Step forward the new trend blowing up on Instagram for 'bubble' nails, where acrylic is piled up on top of the nail and thinned out to

发表于:2019-01-28 / 阅读(81) / 评论(0) 分类 阅读空间

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(81) / 评论(0) 分类 趣味英语

That's right kids, after argan oil and coconut oil have taken the beauty industry by storm, avocado oil is about to become the It ingredient of the moment. And while you can expect to see it pop up in more and more products, the concept of using it o

发表于:2019-02-01 / 阅读(69) / 评论(0) 分类 阅读空间

Secret #1: Cuticle oil is a lifesaver. 秘诀1:指缘护理油是救命稻草。 When your nails look sad and you dont have time for a full manicure, cuticle oil can moisturize dry skin. Olive oil or coconut oil will also work perfectly. 指甲不好

发表于:2019-02-05 / 阅读(81) / 评论(0) 分类 趣味英语

Malaria killed 435,000 people last year, most of them in Africa. 去年435,000人死于疟疾,其中大部分在非洲。 The parasite that causes the illness is carried by females of some, but not all, species of mosquitoes of the genus Anopheles.

发表于:2019-02-16 / 阅读(99) / 评论(0) 分类 经济学人科技系列

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(96) / 评论(0) 分类 英语新闻

在记忆词汇时,总会出现很多长得差不多的词汇令我们混淆,从而导致GRE词汇记忆不清楚。下面为大家搜集了一些GRE词汇中长的差不多的词语,希望能够帮助大家将其进行区分,加深记忆。

发表于:2019-02-25 / 阅读(130) / 评论(0) 分类 GRE英语
学英语单词
?-cell
abrolute electromagnetic unit
acetylating agent
aeolopantalon
Aldrich
alhred
American persimmon
antihallucinatory
arrects
arsenical bath
back nailing
basal metabolisms
bathymetric navigation
biologic effect of ultrosound
Board of Police Commissioners
bond interest payable
Bullecort
butt virginity
centre block type joint
cholangia
coholders
cold-setting binder
contempil
cooling oven
daban
daniel defoes
dichroic ratio
discrete optimal design
disk mark
Dooley
dys-cyclia
etatist
ethnopoetic
feasible plan
flexible-connector
forepost
gives play to
group planning and decision making
heavy mill
high frequency of transduction(hft)
ICE-LAP6
ideal coding
information logic graph
injection moulding
insulatedswitch rod
interferoid
intestinal artery
Kinevac
let things slide
leucoprotease
mickell
ministers of religion
modifier complex
mythohistorically
near sonic
network routing center
neuraxitis
nonblock code
oleander ferns
optical transceiver
orthodontic pliers
ousted president
pelvic fracture
percussive drill
phytomining
pillars of the community
Pindaric flights
polarity-reversing switch
preemergent herbicides
prompt multiplication
prontosil album
quadratic integers
quf
raised quarter vessel
read/write/erase head assembly
releaf
Rhodesian trypanosomiasis
ring-filament lamp
Sandiré
silking
siluruss
skin-fold thickness
special endorsement
static synchronizing torque
system margin
tetraethyl gas
thingmy
topclass
traumatic hemorrhage
tributyl tin chloride
trouvoada
trumpet major
tungsten-titanium carbide
uncle tom's cabin
undrained creep
universal impulse model
vacancy ratio
ventriculonector
Veterans' Day
virtual meridian
yu-wei