单词：alternative electric field
单词：alternative electric field 相关文章
Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod
(科普英语)Earth and Sky
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
VOA常速英语2013年(十二月)
Scientists: Spiders Use Electric Fields to Move through Air Scientists have long wondered how spiders can use the webbing they make to fly. The 19th century English naturalist Charles Darwin commented on their behavior when very small spiders landed
2018年VOA慢速英语(七)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
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
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
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
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
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
VOA常速英语2007年（十二月）
UNIT SIX A field trip [00:07.34]Let's chant [00:09.82]Let's go on a field trip.There's so much to do. [00:17.21]We can collect leaves,and take picctures,too.We can watch the ants and see what they eat [00:24.92]Let's go on a field trip.It's quite a t
人教版小学英语五年级
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
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
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
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
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
VOA2003（下）-教育与新闻
Motional Induction Last time, we talked about motional induction , a phenomenon by which the ocean generate s a magnetic field. It works like this: earth has its own magnetic field. The ocean has plenty of charged atoms in it, in the form of dissolve
英语听力文摘 English Digest
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
2007年VOA标准英语（二月）
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
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