单词：to cover me
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This is Scientific Americans 60-SecondScience. Im John Matson, got a minute? Say you need a diamond. You could go downto the jeweler, or you could put some carbon deep underground and let it sitfor a couple billion years. Or you could hop in a starsh
Scientific American(八)月
Like a phoenix rising from the ashes, astronomers have found a whole new solar system may be forming in the wake of a star's violent death. This is the Hidden Universe of the Spitzer Space Telescope, exploring the mysteries of infrared astronomy wit
国家地理2008年
春节前大街小巷都是一片欢快的景象吧 而南方的冰雪已经开始消融～ 真是一个好消息～ 这里带来这样的一首欢快的曲子 在这里给大家拜年啦～～～ 希望在新的一年里所有的人都幸福安康，快乐平安^_^ Fast Food Song Can I take your order please? Let's eat to the beat (
音乐咖啡厅
Like a phoenix rising from the ashes, astronomers have found a whole new solar system may be forming in the wake of a star's violent death. This is the Hidden Universe of the Spitzer Space Telescope, exploring the mysteries of infrared astronomy with
自然百科2008年
Could these be the neutron stars predicted by Z? astronomers nicknamed them pulsars and immediately set their telescopes searching for further clues about them, just a year later, they found one, in the perfect place to put Z's theory to the test.In
探索与发现2015年
Olympic athletes traditionally have been known for their years of discipline in training for one moment of international sports glory. Sometimes, the preparation involves precise and scientific regimens, including strict diets to build muscles and e
VOA标准英语2008年（八月）