英语翻译.高手进-----“Two centuries ago, Meriwether Lewis and Willia

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英语翻译.高手进
-----“Two centuries ago, Meriwether Lewis and William Clark left St.Louis to explore the new lands acquired in the Louisiana Purchase,” George Bush said
------“America has ventured forth into space for the same reasons.”
-----Yet there are vital differences between Lewis and Clark’s expedition and a Mars mission
-----A Mars mission may be the single most expensive non-wartime undertaking in U.S. history.
-----Present systems for getting from Earth’s surface to low-Earth orbit are so fantastically expensive ……
-----Yet rocks can be analyzed by automated probes without risk to human life, and at tiny fraction of the cost of sending people.
-----Reprogramming some of NASA’s present budget into the Mars effort, might actually lead to a reduction in such unmanned science.
-----Rather than spend hundreds of billions of dollars to hurl tons toward Mars using current technology, why not take a decade?
-----For the moment, going to Mars is hopelessly unrealistic.

两百年前,梅里韦瑟刘易斯和威廉克拉克离开圣路易,以开拓路易斯安在那购买,获得了新的土地.布什说.
美国已经涉足空间提出了同样的理由.
然而,存在着刘易斯与克拉克的远征火星任务的重大分歧.
火星任务可能是最昂贵的非美国历史上战时事业.
从地球表面到低地球轨道系统的现状得到这么莫名其妙昂贵
然而,可以分析岩石的不危害人类生命的自动探测,并在极短的派遣人的成本.
重编程美国宇航局目前的预算部分进入火星的努力,实际上可能导致这种无人科学减少.
与其花费数千亿美元,不如对火星投掷运用现代科技,为什么不选下一个?
暂时前往火星是绝望不现实的.

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