[化] 有迁移浓差电池

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(290) / 评论(0) 分类 VOA2003(下)-环境与健康

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:2018-12-03 / 阅读(214) / 评论(0) 分类 初学者听力文摘精选

It's important to get enough sleep. [00:06.27]Section 1 Before you read [00:08.18]PAIRWORK [00:09.20]Discuss the following questions [00:10.97]with your partner. [00:12.50]1.How many hours do you and your partner sleep [00:16.27]every day? [00:17.78]

发表于:2018-12-10 / 阅读(223) / 评论(0) 分类 初中英语山东版九年级(全一册)

Texting while driving. Statistics say its the number one driver distraction. And it's also something Karol Smith fears everyday. It's kinda scary. As the mother of a teenage driver, it's not her son she's most worried about texting. It's the other dr

发表于:2018-12-11 / 阅读(155) / 评论(0) 分类 访谈录2009

Fish do drink water, but how they consume it depends on where they live. Water gets into a fishs body through osmosis, the process in which water diffuses from a higher to a lower concentration. 鱼儿确实喝水,但它们怎样喝水却取决于其

发表于:2018-12-28 / 阅读(153) / 评论(0) 分类 初学者听力文摘精选

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(227) / 评论(0) 分类 国家地理2008年

Psychologically defined, concentration is the process of centering one's attention over a period of time. In practical application, however, concentration is not as simple to deal successfully with as the definition may imply. For this reason, it is

发表于:2019-01-02 / 阅读(197) / 评论(0) 分类 双语有声阅读

坚持不懈,直到成功。 我们每天的奋斗就像对参天大树的一次砍击,头几刀可能了无痕迹。每一击看似微不足道,然而,累积起来,巨树终会倒下。这恰

发表于:2019-01-03 / 阅读(197) / 评论(0) 分类 四六级词汇与结构练习

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(200) / 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(175) / 评论(0) 分类 VOA标准英语2008年(五月)

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(161) / 评论(0) 分类 英语听力文摘 English Digest

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(200) / 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(184) / 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(348) / 评论(0) 分类 英语新闻

21-Concentration

发表于:2019-02-05 / 阅读(428) / 评论(0) 分类 摘取梦想的启蒙星

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(297) / 评论(0) 分类 趣味英语

Yael: Good news, Don, I think I've finally mastered schmoozing with strangers. Don: You have? Y: It all has to do with what scientists call trait transference, the process through which observers deduce facts about other people based on the things th

发表于:2019-02-15 / 阅读(213) / 评论(0) 分类 英语时差8,16

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(255) / 评论(0) 分类 英语新闻

A married couple went to the hospital together to have their baby delivered. Upon their arrival, the doctor said he had invented a new machine that would transfer a portion of the mother's labor pain to the father. He asked if they were willing to tr

发表于:2019-02-18 / 阅读(198) / 评论(0) 分类 趣味英语

It is cold, so bitter cold, on this dark, winter day in 1942. But it is no different from any other day in this Nazi concentration camp. I stand shivering in my thin rags, still in disbelief that this nightmare is happening. I am just a young boy. I

发表于:2019-02-18 / 阅读(157) / 评论(0) 分类 阅读空间
学英语单词
adrenaline-pumping
all-busy circuit
alumina lap
anathematizing
authentication protocol
balogh
bedsprings
bonged
bumpar
cane-cutting
condenser substage
cylindrulite
dairy-type
decanal
deflection voltage
divisory
doublestrike
elimination of unknowns
endemic selenosis
entrainment block
epithermal fission
factor XIII
fascial transplantation
fatigue out
fermionization
fission product damage
fragrancing
Frankenburg
geared oil pump
gines
graded tax
handling line
helindone red 3B
hemisferio
hepatitis infectious
highway cycle
HTML validation service
hub (nave)
incienso
incongenial
infrared spectroscope
insulation of furnace wall
kebira
knock out drops
leachings
lentigo aestiva
leptynite (leptite)
lin-pin
lunntie
magnetofluid dynamics (mfd)
Marion Dufresne Seamount
Matricaria inodora
meaghers
micralifera
milling chamber
mothery
noninterpretative
nonmachine
nose extension
operating rules
otso
overthrower
pactum de contrahendo
pancreatic extract
para-Hydroxyamphetamine
Peltiphyllum
permanent dynamic storage
piprinhydrinate
Plant Breeding and Acclimatization Institute
polynoids
pre-visualization
preachee
promfinplan
rapid contactor
raylets
reactor homogeneous
receiver field-of-view selector
recombination(bridges & morgan 1923)
rediapering
revenuable
river bar
rpl
rymare
salt-water oil cooler
saussureoides
scotoscope
scratchpaper
sieges of vicksburg
soot chamber
Sorbus dunnii
stock relief
Tagbilaran
total net ablation rate
trihydroxy-cholecalciferol
trps
turbine boiler propulsion unit
ventilation pressure
wave machines
wet dust control
wet-spin
whalelore
yolk sac membrane