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四家欧美公司提出了自己的太空旅游方案,包括空间站和亚轨道飞行两种方式,这些方案将帮助更多人圆自己的飞天之梦。
Four European and American companies have proposed their own space tourism programs, including space stations and sub-orbital flights in two ways, these programs will help more people dream of their own dreams.