单词：short pinion
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This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. One of the problems with large-scale solar power plants is that they require a huge amount of space. To rise above that problem Israeli researchers rece
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DEVELOPMENT REPORT – December 30, 2002: Adaptive Eyecare By Jill Moss This is the VOA Special English Development Report. The World Health Organization estimates as many as one-thousand-million peop
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By David McAlary Washington 14 September 2006 The International Space Station has spread a new pair of golden wings. They are solar panels that will double the amount of power available to the outpost. Unfurling them took longer than expected becaus
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This podcast is brought to you by the American Chemical Society. The global challenges chemistry solutions podcast from ACS discusses how chemistry research is critical in solving some of the world's most daunting problems, concerning energy, food an
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Early warning systems can be the difference between life and death in earthquake-prone regions. But they are expensive. The US, Mexico and Japan have such systems. That leaves large swats of central and South America, Asia and the Caribbean unprotect
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That proposition was put to the test after Paul Volcker became Fed chairman in 1979. 这种主张在保罗沃克尔于1979年成为美联储主席后被付诸验证。 Mr Volcker was set on getting inflation down. 当时，沃克尔决心要把通胀降
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