自动性细胞

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(339) / 评论(0) 分类 VOA2003(下)-环境与健康

[ti:] [ar:] [al:] [by:] [00:01.00] Late At Night, Do You Turn Off Your Cell Phone? 今夜不关机 [00:08.22]Today, my friend asked me a question. [00:11.17]At night, do you turn off your cell phone? [00:14.78]If you dont, whom do you leave it on for

发表于:2018-12-26 / 阅读(262) / 评论(0) 分类 温馨夜读

Unit9 High-tech Gadgets Vocabulary Task Answers/Script A The solar car of the future is here today. This car is right on the cutting edge of technology. Be the first in your neighborhood to have one. B Introducing a revolutionary new product the pers

发表于:2018-12-29 / 阅读(227) / 评论(0) 分类 大学体验英语听说教程

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(261) / 评论(0) 分类 国家地理2008年

The girl would turn her cell phone off and put it by her photo on the desk everynight befor going to bed. This habit had been with her ever since she bought the phone. The girl had a very close boyfriend,when they couldn't meet ,They would either cal

发表于:2019-01-02 / 阅读(231) / 评论(0) 分类 每天一点英文

[00:00.00]Fuel CellEnergy in the Future [00:09.66]The price of oil has soared from $43.45 a barrel to $65.35, a 50% gain. [00:19.95]It is transportation such as driving back and forth to work [00:24.32]and visiting companies that burns lots of fossil

发表于:2019-01-02 / 阅读(213) / 评论(0) 分类 晨读英语美文60篇

If the human genome were put in a straight line, it would be over six and a half feet long. So how do you store all that DNA in a tiny nucleus? And have the cell manage it? Researchers explain how in a study featured on the cover of the October 9th i

发表于:2019-01-08 / 阅读(227) / 评论(0) 分类 Scientific American(十)月

On Mondays, we report on the business of technology. Record oil prices and record gas prices are inspiring some Americans to rethink the technology they use in their transportation. People who must drive do have alternatives to the gasguzzling SUV an

发表于:2019-01-08 / 阅读(295) / 评论(0) 分类 2005年NPR美国国家公共电台

By Carol Pearson Washington 25 September 2007 A lot of people wonder about the impact cell phones might have on their health. And now a new study shows that heavy mobile, or cell, phone use may result in hearing loss. VOA's Carol Pearson reports. As

发表于:2019-01-11 / 阅读(244) / 评论(0) 分类 2007年VOA标准英语(九月)

VOICE ONE: Im Bob Doughty. VOICE TWO: And Im Steve Ember with EXPLORATIONS in VOA Special English. This week we look at an industry that is facing major changes -- the automobile industry. (MUSIC) On the road, near Yosemite, California Americans, pos

发表于:2019-01-11 / 阅读(204) / 评论(0) 分类 VOA慢速英语2008年(四)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(221) / 评论(0) 分类 VOA标准英语2008年(五月)

Genome: Now in 3-D! In a study in the journal Science, researchers report the mapping of the three-dimensional structure of the human genome, and the finding that the cell's nucleus is divided into two regions, one where DNA goes to get expressed. Cy

发表于:2019-01-30 / 阅读(270) / 评论(0) 分类 60秒科学

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(255) / 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(233) / 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(407) / 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(332) / 评论(0) 分类 趣味英语

So how can a hormone ultimately affect the rate of aging? 那么,激素到底是怎样影响衰老的速度呢? How could that work? 原理是什么呢? Well it turns out that in the daf-2 mutants, 原来在daf-2变异体中 a whole lot of gene

发表于:2019-02-14 / 阅读(256) / 评论(0) 分类 TED演讲科学篇

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(270) / 评论(0) 分类 VOA常速英语2007年(十二月)

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(317) / 评论(0) 分类 英语新闻

Why You Shouldn't Leave Nude Photos of Yourself on Your Cell Phone The 23-year-old woman lost her cell phone in a restaurant parking lot. By the next morning, someone was texting nude photos of her to everyone. As regular readers have learned many ti

发表于:2019-02-24 / 阅读(240) / 评论(0) 分类 阅读空间
学英语单词
adjourned to
ambans
anterior projection
apolepsis
ash free basis
aurivilliusite
baresarks
beer wort agar
BPM suite
butt coupling
campaign hats
cesapral
Changbang
cold processing
communication navigation identification (cni)
completamente
coordinate clause
copper ruby glass
corridor diplomacy
cross-regression
dictyota bartayresiana
doughtier
Dynazina
elegiacally
Elspeth
enheaven
epidermal cell
Esteroprotease
excess profits duty
factory furniture and fixtures
fan service
final stage
foolhardihood
form-tie assembly
FPCG
frequency irregularity
graminous
grottos
group exchange
hairswidth
haulabout
His-Werner
hit-and-runs
hushed up
hydrargyrum aceticum
independent sideband transmitter
inheritors
innerduces
jumping shrew
kahi
kahne
Katayga
Kirchhoff's diffraction theory
long line culture
lower confidence limit
luxus
machinery surveillance system
maternity and child hygienics
mechanical reduction gear
misdeals
monopus
muscling up
near end crosstalk loss
niggers in a snow storm
noise tube
outwell
parasceuastic
periodic treatment
point-diffraction interferometer
pole terminal
postsurge
pre-incubateds
pyramid of age
queer ducks
quiet thermal emission
reserve shut-down hours
role transition
rortiest
roughing cattle through winter
Rumyantsevo
sarothanoside
search angle
secondary pyothorax
significance probability
species density
staphisagria
sunnitizes
superhardens
surface normal
ta dah
tail-spindle
thalamacortical
this summer
upper atmospheric physics
van der Waals forces
Veg-out
waiver of premium
weighhouses
wet-chemical technique
wexlers
y?eh wu