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Some 250 commercial and military satellites now orbit in the lowest altitudes, according to the Satellite Industry Association, and most of them are defenseless against the radiation that would be released by a high-altitude atomic burst.
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数目不断增加的人造卫星为我们提供通讯、导航、无线与有线电视,以及地面摄影与天气预报等服务。
以上内容独家创作,受著作权保护,侵权必究
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