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万物简史:PART I CH 3_12

2011-08-21 07:00
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这是一部有关现代科学发展史的既通俗易懂又引人入胜的书,作者用清晰明了、幽默风趣的笔法,将宇宙大爆炸到人类文明发展进程中所发生的繁多妙趣横生的故事一一收入笔下。惊奇和感叹组成了本书,历历在目的天下万物组成了本书,益于人们了解大千世界的无穷奥妙,掌握万事万物的发展脉络。
收获英语 收获一本好书~!

书本的朗读语音很charming的磁性英音~~~大家可以好好学着模仿哦~~~!!
因为原著为美国人所写,单词采用美式拼法,不抄全文,然后听写单词或词组(用[-No-]表示)以及句子(用[---No---]表示)。请边听写边理解文意,根据上下文注意各句标号,这样有助于提高正确率。



Hint
magnetosphere

The question that naturally occurs is "What would it be like if a star exploded nearby?" Our nearest stellar neighbor, as we have seen, is Alpha Centauri, 4.3 light-years away. I had imagined that if there were an explosion there we would have 4.3 years to watch the light of this [-1-]event spreading across the sky, as if [-2-] a giant can. What would it be like if we had four years and four months to watch an inescapable doom advancing toward us, knowing that when it finally arrived it would blow the skin right off our bones? Would people still go to work? Would farmers plant crops? [---3---]

Weeks later, back in the town in New Hampshire where I live, I put these questions to John Thorstensen, an astronomer at Dartmouth College. "Oh no," he said, laughing. "The news of such an event travels out at the speed of light, but so does the [-4-], so you'd learn about it and die from it in the same instant. But don't worry because it's not going to happen."
For the blast of a supernova explosion to kill you, he explained, you would have to be "[-5-]close" — probably within ten light-years or so. "The danger would be various types of radiation—cosmic rays and so on." These would produce [-6-]auroras, shimmering curtains of spooky light that would fill the whole sky. This would not be a good thing. Anything potent enough to put on such a show could well blow away the magnetosphere, the magnetic zone high above the Earth that normally protects us from ultraviolet rays and other cosmic assaults. [---7---]
magnificent tipped from Would anyone deliver them to the stores? destructiveness ridiculously fabulous Without the magnetosphere anyone unfortunate enough to step into sunlight would pretty quickly take on the appearance of, let us say, an overcooked pizza.
很自然产生了这样的问题:要是一颗恒星在近处爆炸,情况会怎么样?我们已经知道,离我们最近的恒星是α星,在4.3光年以外。我曾经想像,要是那里发生一次爆炸,我们在4.3年时间里都看得到大爆炸的光洒向整个天空,仿佛是从一个大罐子里泼出来的那样。要是我们有4年零4个月的时间来观看一次无法逃脱的末日渐渐向我们逼近,知道它最后到达之时会把我们的皮肉从骨头上刮得一干二净,情况会怎么样?人们还会上班吗?农民还会种庄稼吗?还有人把农产品运到商店去吗?   几个星期以后,我回到了我居住的那个新罕布什尔州小镇,向达特茅斯学院的天文学家约翰•索尔斯坦森提出了这几个问题。"哦,不会了,"他笑着说,"这么一件大事的消息会以光的速度传开,还有那个破坏性,你一听顿时会被吓死。不过,别担心,这种事情不会发生。"   至于超新星爆炸的冲击波会要你的命的问题,他解释说,你非得"离得近到荒唐可笑的程度"--很可能是10光年左右之内。"危险来自各种辐射--宇宙射线等等"。辐射会产生惊人的极光,像闪闪发亮的怪异光幕,充斥整个天空。这不会是一件好事情。任何有本事上演这么一幕的事儿会把磁层--地球高空通常使我们不受紫外线和其他宇宙袭击的磁场--一扫而光。没有了磁层,任何倒霉蛋只要踏进阳光,很快就会看上去--比如说--像个烤焦的比萨饼。
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