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国家地理-2008-03-20 Rho Ophiuchi Cloud 璀璨的星云

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

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国家地理2008年

EXPLORATIONS - Yabby and Space Place

EXPLORATIONS -February 13, 2002: Yabby and Space Place By Paul Thompson VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with the VOA Special English program EXPLORATIONS. Today we t

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CNN 2010-04-21

A volcano in Iceland had been dormant for more than 180 years. But then a few weeks ago, this started. The volcano is erupting, and some scientists say it could last for more than a year. That's about how long it went the last time this happened，th

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VOA慢速英语2016--Cloud Services Compared

Cloud Services Compared Finding the Cloud service than can best serve your needs can be difficult as there are so many available. Consumers need to consider and compare each services features, storage possibilities, free space and best price. You may

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2016年VOA慢速英语(八)月

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Transcript for Reference Only --chunshan The infrared astronomical satellite, now celebrating its 25th anniversary, gave us the first all sky view of our dusty infrared universe. Floating above the galactic center is the Rho Ophiuchi Cloud, about 400

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自然百科2008年

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animal husbandry department

anisothermal transformation

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antagonistic action

archaeplastid

batten-and-space bulkhead