国外媒体资讯
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(3)
The very first Steve Jobs'computer was actually the brain child of his friend, Steve Wozniak. Wozniak did the wiring and Jobs did the dreaming and be hold the Apple I. No power supply. No casing,2011-11-14 编辑:Mike 标签:
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[自然百科] 自然百科:大迁徙之繁衍生息(2)
And for Johnny rook, the wait is over. Because some of the world's greatest wanderers are heading his way. They've been traveling the globe for months, even years. Only one thing can bring th2011-11-14 编辑:Mike 标签:
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[时差N小时] 时差N小时:地球磁场的变化(上)
You’re a polar explorer and you’ve just reached the north pole. The huskies are yapping, the cameras are ready and you’re just about to unfurl the flag when, all of a sudden, the no2011-11-14 编辑:beck 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(2)
Say what you want, but Steve Jobs was the guy who envisioned a computer on every desk, and ear bud in every year and a device that would take multitasking to a whole new level. He didn't just...2011-11-11 编辑:Mike 标签:
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[自然百科] 自然百科:大迁徙之繁衍生息
They are driven to move, to move and to multiply. Possessed by the most insatiable need to breed, they will journey to brutal Afican battle fields, and grow on south Atlantic shores. For the sake of2011-11-11 编辑:Mike 标签:
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[自然百科] 自然百科:浴火重生大堡礁
Eighteen million years ago, a series of remarkable events conspired to creat the great barrier reef--the migration of a continent, the might of an ocean, and the full power of the tropical sun. The2011-11-10 编辑:Mike 标签:
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[文化博览] 文化博览:一封战地来信
"Hello Dad, just a few lines to let you know I'm well and hope you all are too. Finally I've got used to my machine gun. I can't say that I much like using it to shoot against ...2011-11-10 编辑:Mike 标签:
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[时差N小时] 时差N小时:数字零的由来(下)
Older cultures like the Babylonians used a marker of some sort to designate the space where no number goes, such as what comes between six and nine in the number six hundred and nine. The Greeks even2011-11-10 编辑:beck 标签:
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[自然百科] 自然百科:地球大迁徙
They're born to move, to move or die, forging ahead against terrifying odds, navigating the first of millions of miles, spanning continents on fledgling wings, clattering ever onwards. 他们天生就要2011-11-09 编辑:Mike 标签:
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[文化博览] 文化博览:天才史蒂夫·乔布斯改变世界(1)
He changed our lives. Steve Jobs had a vision. Like the world lost a John Lennon. He demanded perfection. He could rip into people, be tough to work for.And led a technological revolution.他改变了我们2011-11-09 编辑:Mike 标签:
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[时差N小时] 时差N小时:数字零的由来(上)
Did you know that the number zero was discovered by Hindu mathematicians around the sixth century? What? That's crazy! Zero is just a number. It's not something that you have to discover,...2011-11-09 编辑:beck 标签:
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[探索发现] 走进神秘的落基山脉第10期:落基山脉的下降
听力原文 上次咱们在怀俄明州的盆地发现了什么呢?它能否告诉我们落基山下降的原因呢!咱们接着听! Rock and cobbles eroded down from the Bighorn Maintains and filled up the basin to at least a thousand fe2011-11-08 编辑:Daisy 标签:
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[时差N小时] 时差N小时:地球磁场改变的原因(下)
Every so often, however, that regular motion is interrupted. Think of what happens when you stir that bubbling soup. It takes a few minutes for things to settle down and the regular pattern of bubbli2011-11-08 编辑:beck 标签:
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[时差N小时] 时差N小时:地球磁场改变的原因(上)
On a previous show we discussed how, every 200,000 years or so, the north and south poles switch places. Not that the places themselves move—rather, the entire magnetic field of the earth flips arou2011-11-07 编辑:beck 标签:
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[时差N小时] 时差N小时:撕纸的秘密
The way paper tears is related directly to how it is made. Most paper is made from wood fibers. Logs are chopped into wood chips, mixed with water and chemicals, and run through a process that separa2011-11-04 编辑:beck 标签:
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向男性避孕药更进一步(上)
在更衣室中细致谈论各种避孕方式,以及这些避孕方式优缺点的频率有多高?[ -
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向男性避孕药更进一步(下)
碳酸氢盐的浓度在不同组织中变化不大,但有一个明显的例外。 - 3
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