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灭绝的外星文明或有助于拯救人类！
source link: http://tech.sina.com.cn/d/a/2019-06-14/doc-ihvhiews8741117.shtml
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新浪科技讯北京时间6月14日消息，据美国生活科学网站报道，灭绝的外星文明将有助于拯救人类！也许我们需要一个戏剧性外星物种灭绝实例，才能使人类走上正确的发展道路，没有从灭绝外星文明的衰落中汲取教训就有可能会重蹈覆辙。当前地球人类似乎正在朝向一
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