Title Text:They originally came here to try to investigate our chemtrail technology, and got increasingly frustrated when all their samples turned out to just be water ice with trace amounts of jet exhaust. Origin:https://xkcd.com/2953/ https://www.explainxkcd.com/wiki/index.php/2953:_Alien_Theories 外星人理论 他们最初来这里是为了调查我们的化学尾迹技术，然后越来越沮丧，因为他们所有的样本都是含有微量引擎废气的水冰。 注：化学尾迹阴谋论（Chemtrail Conspir… Read…