单词：positive energy wave
单词：positive energy wave 相关文章
Passage 20 Waves How does light get from the sun to the earth? How does music get from the stage to the audience? They move the same way in waves! Light and sound are forms of energy. All waves carry energy, but they may carry it differently. Light
英语专业四级听写
One of the newest sources of alternative energy is also one of the oldest - water power. The 19th century water wheel, though, bears no resemblance to the 21st century contraptions powered by ocean waves. The wave energy sector has been slow to coale
VOA标准英语2010年(十一)月
Local governments in many parts of eastern China are taking steps to try to conserve energy in the midst of the heat wave which has seen temperatures in many parts of the region top 40-degrees. CRI's Shen Chengcheng with more. Heat alerts have been i
世界各地新闻集锦
By Stefan Bos Budapest 26 June 2007 A heat wave has killed dozens of people in Central and Southeastern Europe, most in Romania, where authorities have issued a code orange alert in the capital Bucharest and in eight counties. There are also concerns
2007年VOA标准英语（六月）
Harnessing Ocean Wave Power Provides Cheap Electricity 利用海洋波浪提供廉价电力和饮用水 WASHINGTON An often overlooked renewable energy resource is the power of ocean waves. Scientists in California say harnessing energy from the regu
VOA标准英语2014年(三月)
RACHEL MARTIN, HOST: I say renewable energy and you probably think wind or maybe the sun. You might be able to put the ocean's waves on that list, too. The Department of Energy is experimenting with this idea. The department is spending $40 million t
2017年NPR美国国家公共电台11月