[细胞] 限制性细胞

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(438) / 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(378) / 评论(0) 分类 温馨夜读

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(363) / 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(334) / 评论(0) 分类 每天一点英文

If you're confused about that versus which, don't feel bad. It's one of the most common topics people ask me about. I used to work as a technical writer, and I'd often edit documents in which people used the wrong word. More than once, I'd put in the

发表于:2019-01-02 / 阅读(262) / 评论(0) 分类 英语语法 Grammar Girl

Since Halloween is coming up, I thought you could use a refresher about whiches--more specifically, when to use a which and when to use a that. To understand the difference between which and that, first you need to understand the difference between a

发表于:2019-01-02 / 阅读(329) / 评论(0) 分类 英语语法 Grammar Girl

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(377) / 评论(0) 分类 2007年VOA标准英语(九月)

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(337) / 评论(0) 分类 VOA标准英语2008年(五月)

Libyans Upset Over Restrictive Voting Abroad Few Libyans remember days like this when they could vote. And, it counted. Just saying that -- Libyan government. 'Voting for the Libyan government' has a nice, sweet ring to it, said Libyan voter Adam Sbi

发表于:2019-01-13 / 阅读(311) / 评论(0) 分类 VOA标准英语2012年(七月)

California Leads US in Restrictive Gun Laws There are few restrictions on owning guns in most U.S. states. Guns are widely used for hunting and sport, and for self-protection. California and several other states, including New York and Massachusetts,

发表于:2019-01-13 / 阅读(299) / 评论(0) 分类 VOA标准英语2012年(七月)

定语从句可分为限制性和非限制性两种: 1.限制性定语从句(Restrictive attributive clauses): 限制性定语从句,使所修饰的词表示一个特定的人或东西,如果去掉它,那个词就失去意义,句子就不

发表于:2019-01-18 / 阅读(286) / 评论(0) 分类 英文语法词汇

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(356) / 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(344) / 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(557) / 评论(0) 分类 英语新闻

Do you sometimes wonder whether to use that or which in a sentence? In many cases, in British English, both words are equally correct. 你是不是经常想要弄明白that和which在句中有什么区别?在英式英语中的一些使用场景中,这

发表于:2019-02-07 / 阅读(236) / 评论(0) 分类 英文语法词汇

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(445) / 评论(0) 分类 趣味英语

Do you sometimes wonder whether to use that or which in a sentence? In many cases, in British English, both words are equally correct. 你是不是经常想要弄明白that和which在句中有什么区别?在英式英语中的一些使用场景中,这

发表于:2019-02-09 / 阅读(305) / 评论(0) 分类 英文语法词汇

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(387) / 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(430) / 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(343) / 评论(0) 分类 阅读空间
学英语单词
acylamidase
adhibited
air speed
annual herb
antihidrotic
Aporrhais
attraction-repulsion pattern
autism
azimuth angle coupling unit
benign synovioma
bigged
britchka
broadcast television
bronchial mucosa curette
bugojno
castoroil
closo coordination compound
coffee cup
coolroom
debyeogram
demoscene
devise
disabled armyman
electro-optical light-detecting apparatus
esty
fiber-optic data distribution interface
fibre-optic coupling
floating liquid natural gas unit(flng)
generalized series of Schlomilch
Go your ways.
Goldwyn
Himalayans
homoneura (homoneura) discoidalis
i-ssed
inalimental
information-retrieval
interchangable
intralingual
irrepentance
kaafir
laggings
language of relations
lead coated sheet
Lueckisporites
m-to
mahallyas
march-in right
master-builder
matrix bookkeeping
mercury dilatometer
midless
morbid dysphoria
moutons
Nizhniy Kuranakh
nonhealthcare
Normal backwardation theory
nucleotherapy
obrenovich
opportunity servicing
ordinary axis of symmetry
original ideas
osthole
outflow of capital
pealike
periodic lubrication
phrase dictionary diskette
pitpans
plasma cell blanitis
pre-pottery
pulsing voltmeter
quasi-instantaneous
Que Duong
reddish-pink
rotary-screen feed cleaner
rubber covered wire
sallying forth
sand up
scaphoid fossa
scatocyanin
semi-voluntary
service operation
shaft system
slow-neutron filter
soda-nitre
Sogeri
stabilis
standard colorimetric system
synchronized changeover contact
syndesmological
taffias
taibaishanensis
the even tenor of one's way
thermochemical treatment
three range fix
troublefree
urochloralic
valley tolerance
valve hole air valve cap cover
waaah
Warmquelle
waxmallows
Whitsun week