a. 无茎的, 无梗的
a. not having a stem

【近义词】
【反义词】

Most college students in the United States choose their major, or main field of study for their degree, before or during their first year. For Saskia Fagan, making that choice was not easy. Fagan, who is now 31 years old, grew up in Takoma Park, Mary

发表于:2018-12-12 / 阅读(190) / 评论(0) 分类 2018年VOA慢速英语(一)月

SCIENCE REPORT — March 27, 2002: New Stem Cell Study By Mario Ritter This is the VOA Special English SCIENCE REPORT. Researchers at an American medical center say special stem cells in normal human

发表于:2019-01-02 / 阅读(246) / 评论(0) 分类 科技之光

Rwanda Invests in STEM Education for Girls Yvonne Kevia is an 18-year-old high school student in Rwanda. She wants to become a chemical engineer. She enjoys doing experiments and taking careful notes in her high school laboratory in Kigali, Rwandas c

发表于:2019-01-02 / 阅读(235) / 评论(0) 分类 2017年VOA慢速英语(十二)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(225) / 评论(0) 分类 健康与经济

SCIENCE IN THE NEWS - Progress Made in Stem Cell Research By Caty Weaver, Jerilyn Watson, ... Broadcast: Tuesday, May 31, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I

发表于:2019-01-09 / 阅读(255) / 评论(0) 分类 科技之光

FAITH LAPIDUS: This is SCIENCE IN THE NEWS in VOA Special English. Im Faith Lapidus. CHRISTOPHER CRUISE: And Im Christopher Cruise. Today, we will tell about possible hope for children suffering from damage to their nervous system. We will also tell

发表于:2019-01-12 / 阅读(274) / 评论(0) 分类 2011年VOA慢速英语(二)月

Stem Cell Therapy Effective Against HIV Virus in Mice The actual stem cells were injected in my arm, said Diana Souza. Diana Souza says stem cell therapy helped restore full use of her severely fractured arm. It is a miracle. It does work. And I have

发表于:2019-01-13 / 阅读(214) / 评论(0) 分类 VOA标准英语2012年(五月)

Stem Cell Treatment Boosts Heart Function A stem cell treatment for patients with heart failure significantly improved their heart function in a small but promising new study. In heart failure, the heart loses its ability to efficiently pump blood. I

发表于:2019-01-13 / 阅读(205) / 评论(0) 分类 VOA标准英语2011年(十一月)

President Bush says he will veto legislation that would relax restrictions on embryonic stem cell research. There is growing bipartisan support in Congress for changing those rules. 布什总统表示他将否决要求放松对胚胎干细胞研究限制

发表于:2019-01-19 / 阅读(183) / 评论(0) 分类 VOA双语新闻 Bilingual News

Australian researchers may have discovered a new way to treat hearing loss in infants. And the secret lies in the NOSE. Our reporter Li Dong has the details. Noses comes in all shapes and sizes, and Australian scientists are now trumpeting a new use

发表于:2019-01-19 / 阅读(256) / 评论(0) 分类 世界各地新闻集锦

Im all for stem cell research. I know it is a huge issue at the moment. Lots of people dont like it. They say it is unethical and that it is playing God. Other people say we will create Frankensteins monster. Britain seems to be leading the world in

发表于:2019-01-24 / 阅读(277) / 评论(0) 分类 听一分钟英文-S

By Alex Villarreal Washington 28 February 2008 Adult stem cell therapy has successfully treated leukemia and other cancers for years, in the form of bone marrow transplants. A new study in the Journal of the American Medical Association [JAMA] finds

发表于:2019-01-25 / 阅读(393) / 评论(0) 分类 VOA常速英语2008年(二月)

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(268) / 评论(0) 分类 60秒科学

> 39 脂肪中的茎细胞有助于治疗糖尿病 DATE=4-26-01 TITLE=SCIENCE REPORT- Stem Cells in Fat BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(295) / 评论(0) 分类 科技之光

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(260) / 评论(0) 分类 2007年VOA常速英语(十月)

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(412) / 评论(0) 分类 英语新闻

By Jessica Berman Washington 19 December 2007 Stem cell research was the major medical and science story this past year, topping the list of achievements that experts say might finally lead to cures for many diseases. Meanwhile, global health officia

发表于:2019-02-17 / 阅读(271) / 评论(0) 分类 VOA常速英语2007年(十二月)

Japan's government and the country's central bank took action Thursday to dilute the yen. The Japanese currencys strong standing against the dollar is making exports more expensive, hurting efforts to revive the country's moribund economy. After many

发表于:2019-02-18 / 阅读(249) / 评论(0) 分类 英语新闻

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(321) / 评论(0) 分类 英语新闻

今天我们要学的词是stem from. Stem spelled s-t-e-m, stem; and f-r-o-m, from. Stem from是源自,来源于的意思。The UN said Syrian government forces are responsible for most of the violence stemming from the country's unrest. 联合国表

发表于:2019-02-18 / 阅读(259) / 评论(0) 分类 英语单词荟萃
学英语单词
abacterially
actio pro socio
advocate channel
alitex
apple box
Armagnacs
automation plan
banker's drafts
befool
bio-psychosocial
bioexcluded
Birao
boogy
bridge hydraulics
burglarized
capra-esque
carrier-to-noise-density ratio
cautery needle
Cleaning tools
coactus
coda
deciduous wood
dial type thermometer
dictyocaulis filaria
die surface
diethyl piperazinecarboxamide
direct-cut grass and pickup attachment
disk coulter
do bidding
dry balance
examination fee
extended binary vectors
fibre video trunk
food insecurity
genus cyclopess
give instructions
go ahead mode
hairpin coil
hartner
heating source
hemiplegia alternans oculomotoria
hexylester
high pressure generator
hinsdale
hog cote
Hou's process(for soda manufacture)
impermissibly
in full battle array
interbank transfer of funds
jet-ski
lateral slip
longitudinal induced voltage
lumber-rooms
material standards
metal slitting saw with fine teeth
microvacation
milk shake
mobile-broadband
multi-colour flow diagram
multiple occupancy
n'ayant
N-P-N transistor
naleds
needle gap (lightning) arrester
nitration case
number cutter
ohv
on your rounds
Onocp
Oradea(Nagy-Varad)
ordering strategy
organic and polymeric photoconductive materials
petrogram
phenamidine isethionate
photo absorption
photoelectric tracing high precision rule engraving machine
pinheads
pipe-support
plasma emission spectrochemistry
polyborane
pseudorhombus quinquocellatus
qualified call
Rate of return on rate base
rated voltage of hydrogenerator
reserve supplies
resistance distance
sarsas
service potential
Smitty Stevens
soil erosion field model
street orderly
submembranes
swamp biogeochemistry
tetramethyl ammonium azide
therapists
tradesman's entrance
transport test
tree topology
tritium-labelled compound
ultrasonic echo sounder
undiscipline
who's on first