[经] 替换成本, 选择成本, 变换成本

Prototype Solar Cars Train Future Alternative Energy Experts JOHANNESBURG In South Africa, students at the University of Johannesburg have taken on the challenge of building their own solar cars and racing them in competitions. While it offers plenty

发表于:2018-12-08 / 阅读(81) / 评论(0) 分类 VOA常速英语2013年(十二月)

By John Shields Washington, DC 28 February 2006 watch Food vs Fuel report With the world's oil supply increasingly at risk of terrorist attacks and other disruptions, there is an international rush to

发表于:2018-12-16 / 阅读(160) / 评论(0) 分类 2006年VOA标准英语(二月)

This is Scientific Americans' 60-Second Science. Im Steve Mirsky. Got a minute? The search for alternative fuels to gasoline has led to surprising possibilities, for instance, the waste oil for making French fries. But one of the most unusual alterna

发表于:2018-12-24 / 阅读(104) / 评论(0) 分类 Scientific American(一)月

When the wind picks up at the foot of the Rockies, there are those who believe they can hear the future. At the National Renewable Energy Laboratory, making alternative power sources competitive with fossil fuels has been a mission since the energy

发表于:2018-12-30 / 阅读(114) / 评论(0) 分类 国家地理2008年

This week well discuss choices about how best to use the words option and alternative. Frequently the words option and alternative are used interchangeably, but there is a difference. Do you know what it is? Lets say Horatio has a primary plan of act

发表于:2019-01-02 / 阅读(117) / 评论(0) 分类 英语语法 Grammar Girl

By Katherine Cole Tres Chicas is a rarity on the music charts: A vocal group in which all three singers are frontwomen in their own right. And don't get ready to rumba, because despite their Latin nam

发表于:2019-01-07 / 阅读(136) / 评论(0) 分类 VOA2004(下)--文化艺术

By Brian Padden Washington 25 December 2007 With virtually no oil or natural gas resources of its own, Germany relies on Russia for 20 percent of its oil and one-third of its gas imports. But with Russia displaying a willingness to use oil as a polit

发表于:2019-01-07 / 阅读(94) / 评论(0) 分类 VOA常速英语2007年(十二月)

[00:10.40]Now youre talking! [00:13.84]So,have you had any more thoughts about what youre going to do next year,them? [00:19.70]Mm.I dont know,really. [00:24.14]I mean.I was thinking that it might be a good idea to do that art course I was telling yo

发表于:2019-01-10 / 阅读(238) / 评论(0) 分类 创新英语教程第三册

By Jim Fry Washington, D.C. 26 February 2007 watch Energy report President Bush is looking for new ways to encourage the use of alternative energy, and Democratic Party leaders who control Congress appear to be only too ready to comply. That leaves

发表于:2019-01-12 / 阅读(140) / 评论(0) 分类 2007年VOA标准英语(二月)

By Mike O'Sullivan Los Angeles 01 March 2006 Windmills in California Windmills are sprouting across the United States, as Americans search for non-polluting alternative energy sources. The West Coast

发表于:2019-01-13 / 阅读(176) / 评论(0) 分类 2006年VOA标准英语(三月)

President Barack Obama says the United States should depend more on so-called clean forms of energy, like wind and solar, and less on oil. The president promoted his alternative energy plan on an Earth Day visit to the central state of Iowa. Preside

发表于:2019-01-13 / 阅读(96) / 评论(0) 分类 VOA标准英语2009年(四月)

China's energy production relies heavily on coal-fired power stations. As the world's highest emitter of greenhouse gasses, China consumed more than 400 million tones of coal last year. As many parts of China have been shrouded in a gray haze over th

发表于:2019-01-19 / 阅读(109) / 评论(0) 分类 英闻天下

By Jerilyn Watson Broadcast: July 17, 2003 This is Bill White with the VOA Special English Education Report. Some young people in the United States attend 1)alternative schools. These are schools that

发表于:2019-01-20 / 阅读(218) / 评论(0) 分类 VOA2003(下)-教育与新闻

By Gary Thomas Washington 09 February 2007 The controversy over the Bush Administration's pre-war intelligence on Iraq was further fuelled Friday by an internal Pentagon critique of the work of a little-known Defense Department office. As VOA corresp

发表于:2019-02-03 / 阅读(141) / 评论(0) 分类 2007年VOA标准英语(二月)

BEIJING, Aug. 2 (Xinhua) -- China Securities Regulatory Commission (CSRC) announced Thursday that it will further cut stock market transaction fees in a bid to ease burdens on investors amid sluggish market sentiment. The regulator said in an online

发表于:2019-02-04 / 阅读(123) / 评论(0) 分类 英语新闻

After a couple of weeks of relatively clear and blue skies, smog blankets large parts of northern China again, including Beijing, Tianjin, and Hebei province. The Ministry of Environmental Protection says the smog will linger for another five days in

发表于:2019-02-05 / 阅读(122) / 评论(0) 分类 cctv9英语新闻2017年

1. I will send you some brochures□if you are interested. 如果您有兴趣的话,我可以寄给您一些介绍产品的小册子。 2. Can you suggest an alternative﹖ 能否告知您其他方便时间? 3. As an alternative□I wish to propo

发表于:2019-02-15 / 阅读(108) / 评论(0) 分类 天天商务口语

1. I will send you some brochures, if you are interested. 如果您有兴趣的话,我可以寄给您一些介绍产品的小册子。 2. Can you suggest an alternative?t 能否告知您其他方便时间? 3. As an alternative I wish to propose M

发表于:2019-02-18 / 阅读(94) / 评论(0) 分类 英语口语

1. I will send you some brochures, if you are interested. 如果您有兴趣的话,我可以寄给您一些介绍产品的小册子。 2. Can you suggest an alternative?能否告知您其他方便时间? 3. As an alternative, I wish to propose Ma

发表于:2019-02-21 / 阅读(99) / 评论(0) 分类 英语口语

今天我们要学的词是 alternative. Alternative 作为形容词,意思是另外的,可以用于替代的。Stephen Hawking predicts that planet Earth will only survive another 100 years, and it's urgent to consider an alternative planet. 霍金

发表于:2019-03-07 / 阅读(171) / 评论(0) 分类 英语单词荟萃
学英语单词
acetone oil
actio bonae fidei
active water
adlayer
Anopheles fluviatilis
Arran, Island of
ASPCA
audios-in
awgn(additive white gaussian noise)
beslaver, beslobber
Biche-la-mar
bring recovery
burring chisel
candlestick chart
celliferous
Charles Theodore
chump chop
come down on sb like a ton of bricks
constant propagation problem
corpus vertebr?
cotton swab
curio stone
Curranyalpa
decentralized control structure
diaphragm and piston-type pulsator
downclimb
editrixes
elliptic cylinder function
erection welding
farm-machinery industry
file composition
finger type stripping unit
fluxmeter
footwell
free enthalpy,Gibbs function
general crossed check
get one's shirt off
glancingly
grain of ice
heat, the
helicicultural
hirudines
histochemical method
incidence yaw
instruction execution sequence
irrigoscop
juniperus procumbens s. et z.
latitudinal fluctuation
leubner
light out (for/of)
losyngye
macrotext
medium slate blue
mercurial soot
messman
nasa voyager space missions
nature conservation statistics
neodymium material
nonbuyer
notification of an aircraft accident
notification of country of beacon registration
oiled clothing
onwill
ordinary zooid
paeon
phenyl-trimethylsilicane
photo-essay
pinwheel flower
plow disc
port traffic
psyclit
purcelanes
pyridine aldoxime methyliodide
R-NET
residual soil
rfq
root-bark of peony
sarsasapogenin glycoside
screw-type lubricator
screwcap
sicken of
simple linkage brake mechanism
skyline logging, skyline hauling
slipless
small potato
spinning detonation
ste. genevieve
stretches
sweaterless
Tadeïnte
technical parameter
termination analysis
thong
toothed wheel shaping machine
total environmental control
townsley
train formation track
tram drivers
turbine type agitator
tzaritzas
vincamirine
WHCH