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Rho Ophiuchi dark cloud is one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. The infrared astronomical satellite, now celebra
国家地理2008年
on a cloud under a cloud 你们肯定都知道英文里的前置词有时会使人很混乱，它们在句子里虽然不显眼，但是作用却很关键，用错了一个前置词意思可能完全不
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This is the VOA Special English Agriculture Report. In nineteen ninety-four, animal health experts started a worldwide campaign to end rinderpest. This disease is closely related to the measles virus but it does not infect people. Yet for thousands o
2010年VOA慢速英语(十一)月
Pastoralists Played Major Role in Ending Rinderpest In June 2011, the U.N. Food and Agriculture Organization officially declared that the deadly animal disease rinderpest had been eradicated. The disease devastated livestock and lingered in Africa lo
VOA标准英语2012年(九月)
By Jessica Berman Washington 04 October 2007 Fifty years ago, on October 4, 1957, the former Soviet Union launched the first man-made satellite into Earth's orbit, called Sputnik , which began a space race with the United States. While the intense co
2007年VOA常速英语（十月）
SAN FRANCISCO, June 28 (Xinhua) -- Microsoft on Tuesday launched its cloud service Office 365, which was the software giant's answer to competing products from Google and other companies. The service includes on-line versions of Word, PowerPoint, Exc
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