锂二氧化锰电池

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(201) / 评论(0) 分类 VOA2003(下)-环境与健康

CHAPTER TWO Reading POLLUTUO FIGHTERS [00:09.90]Judy is collecting some facts for a class project on pollution. [00:18.44]She is interviewing Doctor Ray,a scientist,about trees. [00:27.51]Judy:Why are you so interested in trees,Doctor Ray? [00:38.16]

发表于:2018-12-01 / 阅读(481) / 评论(0) 分类 上海牛津初中英语八年级

[00:04.88]LISTENING [00:07.63]Listen to the description of the three culture sites. [00:12.67]Complete the map of each site based on what you hear on the tape. [00:18.55]List the names and the importance of the sites,and what is being done to protect

发表于:2018-12-13 / 阅读(238) / 评论(0) 分类 人教全日制普通高中英语(必修)高一

[00:05.07]Unit 22 Environmental Protection Culture Corner [00:10.88]The World Wildlife Fund [00:13.93]The World Wildlife Fund (WWF) [00:16.91]was found by Sir Peter Scott in 1961. [00:20.98]His goal was to help protect the Earth's [00:23.39]natural e

发表于:2018-12-13 / 阅读(185) / 评论(0) 分类 北师大版高中英语模块8(选修)

Unit 8 [00:02.90]Save Your World!What Is Garbage?Garbage is everything that you throw away. [00:13.06]What do we do with garbage?We bury or burn most garbage. [00:19.54]Burying garbage is quick and easy but uses a lot of land. [00:26.07]Most land nea

发表于:2018-12-17 / 阅读(293) / 评论(0) 分类 河北加拿大版初中英语读物

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(170) / 评论(0) 分类 国家地理2008年

By Greg Flakus Scientists in Texas are trying to find a way of reducing carbon dioxide air pollution by capturing the gas, compressing it and then putting it underground. This technique could also yie

发表于:2019-01-03 / 阅读(120) / 评论(0) 分类 VOA2004(下)--健康科技

Parts of Chile are facing a growing water crisis. The Reuters news agency reports the government is taking steps to protect the countrys water supplies from mining operations. But for many years, the Chilean government approved water extraction right

发表于:2019-01-03 / 阅读(152) / 评论(0) 分类 2018年VOA慢速英语(九)月

This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute. It might look and even feel like paper, but a new material created by scientists at MIT is designed to be an oil spill super-absorber. This technology d

发表于:2019-01-08 / 阅读(160) / 评论(0) 分类 Scientific American(六)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(121) / 评论(0) 分类 VOA标准英语2008年(五月)

You might think it's your colleagues or the pressures of work that's getting you down at the office, but new research suggests it could well be the air you're breathing instead. Scientists in the US have found that the concentration of carbon dioxide

发表于:2019-01-16 / 阅读(143) / 评论(0) 分类 阅读空间

Amygdala's Acidic Aspiration Answer A study in the journal Cell shows that the buildup of carbon dioxide when we stop breathing causes a pH change that signals proteins in the brain to force us to inhale. Karen Hopkin reports. Maybe its happened to y

发表于:2019-01-30 / 阅读(227) / 评论(0) 分类 60秒科学

AGRICULTURE REPORT – March 12, 2002: Carbon Dioxide and Crops By George Grow This is the VOA Special English AGRICULTURE REPORT. Increasing levels of carbon dioxide gas in Earth’s atmosphere have

发表于:2019-01-30 / 阅读(164) / 评论(0) 分类 农业与发展

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(146) / 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(144) / 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(289) / 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(254) / 评论(0) 分类 趣味英语

Drivers in the eastern United States may soon start paying for the pollution made by their motor vehicles. Nine eastern states and Washington, D.C. are launching a system of pricing the carbon dioxide produced from burning gasoline and diesel fuel. M

发表于:2019-02-14 / 阅读(146) / 评论(0) 分类 2019年VOA慢速英语(一)月

Curbing climate change The deepest cuts 控制气候变化 一切为了减排 Our guide to the actions that have done the most to slow global warming 我们的行为指南已经最大限度减缓了全球变暖 ON SEPTEMBER 23rd 120-odd presidents an

发表于:2019-02-16 / 阅读(162) / 评论(0) 分类 经济学人要闻

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(207) / 评论(0) 分类 英语新闻
学英语单词
a lie out of whole cloth
alubond method
angle of slope
anophelism
area-mach number equation
Armavir
Ascran
assbreaths
average collection period ratio
Bank Melli Iran
bite a file
body modifications
book entry system
Bowness
Camellia octopetala
Cassia surattensis
cooper cr. (barcoo r.)
covered ladle
cyanol blue
cylindroid helical-coil torsion spring
degrading effect
Dehydroherbarin
diduch
dirter
dismiss from one's mind
diver boots
Dopar
dove-tailing
dystrophic rhinitis
family Spalacidae
feebate
forward compatible
free recoil mount
function set
futuritial
gamma-ray spectroscopy
gypo
Hebra's itch ointment
heterotrophic nitrification
ideologemic
in the wink of an eye
infiltration heat loss
intermediate-frequency transfor-mer
kades
keyboard adapter unit
koyck lagged distribution
leucines
maldescended
manuzio
marine gear box
marine photochemistry
Maxwell-Boltzmamnn quantum statistics
meta symbol
Mishima, Yukio
mizzas
moulded pieces
newbolds
Norwood procedure
octagenarians
oogun
originating organization
outmanages
outsulk
overlay id
partition polarography
pony pump
portable electric lamp
prenotes
proportioning of waste
protoxylem strand
pterobryon subarbuscula
puppy fat
push-upped
quadrate
qualified estate
ranking problem of capital investment
rectangular air distributor
retna
round end clamp
saccharised
Sand and Canvas
Santa Marta, Pta.
ship radio direction finder
shooting jacket
signum function
Smoothstone R.
sphenethmoidal
squishyness
substantive test
surface active
switched-reluctance motor
syndrome of fluid retained in stomach and intestines
Tamus
thioxanthone
timesharing accounting
to be designed as explosion proof
Transphosphoribosidase
trifluoride
Ultrazide
United Nations Commission on Human Rights
volume unita
XR(xeroradiography)