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  • [自然百科] 自然百科:大迁徙之繁衍生息(18)

    Here and now, cub and cub, pound for pound. The bodies of the falling litter the battle field. The females approach to the victorious males willingly, and with a discerning eye. They gravitate to the

    2011-12-20 编辑:mike

  • [自然百科] 自然百科:地球立场

    The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible because it is protected by the magnetosphere, an invisible force field that cocoons

    2011-12-22 编辑:mike

  • [自然百科] 自然百科:海洋生物大揭密

    The Census of Marine Life has released the most comprehensive inventory life in the ocean today. It is an unprecedented database of marine species living in 25 key ocean areas around the world.

    2011-12-28 编辑:mike

  • [自然百科] 自然百科:冰冻星球 前往地球尽头(14)

    The remnants of the sea ice are occupied by sun-bathing seals that have been here all winter. But new arrivals are following the retreating ice edge and they have come here to hunt. Killer whales

    2012-02-06 编辑:mike

  • [自然百科] 自然百科:金星和水星旅行指南(21)

    It's very interesting.这很有趣。Because we believe that the water in the earth, 因为我们相信,水在土壤中,in its atmosphere, 在它的大气中,in the ocean,在海洋中

    2012-03-29 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(2)

    It's been said that that the first person on Mars is alive somewhere on earth today.据说,在火星上的第一个人今天仍然在地球上的某个地方活着。Imagine it's you what do you need to know on

    2012-04-10 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(3)

    Could life have been forged in the same way on both planets?生命在两个行星能以同一方式形成吗?When we sent the first probes to investigate in the 1960s, almost anything was possible.当我们在20世纪60年

    2012-04-11 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(4)

    There are some basic things you should know about Mars before leaving home .在离开家奔赴火星前有一些基本的东西你应该知道。Most days will be clear as sunny and cold.火星上的大多数日子将是阳光明媚但非常

    2012-04-14 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(7)

    Steve Squyres'Martian odyssey has taken him from pole to pole,史蒂夫·斯奎尔斯的火星奥德已经将他带到了两极之间,visiting those places on earth that share at least some of the same charactersis

    2012-04-18 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(8)

    The colors on Mars were painted from a very narrow pallette.火星上的色彩来自一个非常狭窄的调色板。The color pallette here is based on rust, rich in iron-oxides.这个颜色调色板是基于锈蚀、丰富的铁氧化物

    2012-04-19 编辑:mike

  • [新东方商务口语之公司] 自然科学总论:海啸和飓风:一种数学方法

    Interview 3 Manager: Looking through your C.V., I see that you graduated from Oklahoma State University. Can you tell me what training you have had that would specifically relate to the cable televis

    2007-01-27 编辑:admin

  • [自然百科] 自然百科:行星旅行指南 火星(9)

    A test run before attempting the fuel hungry and risky trip to the planet below.在这次危险的旅途前会进行测试检验燃料。Dreaming about Mars and actually going there are two very different things.幻想火

    2012-04-20 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(10)

    Five, four, three, two, one, engine start...五、四、三、二、一、引擎启动…If you are ever lucky enough to book a flight on the first rocket to the red planet,如果你幸运地订到一张发射到这颗红色行星火箭

    2012-04-24 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(11)

    Before we take this giant leap,在我们进行这次巨大的飞跃前,we need to be able to carry everything needed for a 3-year round trip with us.我们需要准备为期三年往返旅行的东西。This is a much larger effor

    2012-04-24 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(12)

    Not only will you want to move your fingers, you want to move around.你不但要动你的手指,你还要到处走动。NASA's lunar electric rover is a prototype for future missions to the moon and Mars.NAS

    2012-04-28 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(20)

    If it had been wet,如果这颗星球曾经是湿的,then everyone would look for nutrient and food sources that could support microbes.然后每个人都会寻找营养和食物来源维持微生物。The water ice is proof of a va

    2012-05-10 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(18)

    When we reconstruct our imaginations,当我们重新发挥我们的想象,Mars are 3 billion years ago.火星在30亿年前是何等模样。We tend to make it like Earth, warm and cozzying,我们往往会使它像地球一样,温暖并且

    2012-05-08 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(16)

    You can make estimate of how much water has flow to carban,你可以估计曾经流过多少水,you can get numbers like a hundred,你可以用成百那样的数字进行编号,two hundreds Amazon Rivers all cut lose ones.这里

    2012-05-07 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(17)

    still, most of the defending survive features on mars were carve way back in the good old days.然而,大多数火星上精雕细琢的特质正在回到过去的好时光。the certainly something happened early history on m

    2012-05-07 编辑:mike

  • [自然百科] 自然百科:行星旅行指南 火星(14)

    You're gonna mark to 27, 27 times speed of sound.你要标注到27, 声音速度的27倍。And for our vehicle, between when we hit the top of Martian atmosphere and when we were bouncing on the surface

    2012-05-03 编辑:mike