Drawingsofhumancoloniesonotherplanetsoftenpicturetheent...
问题详情：Drawingsofhumancoloniesonotherplanetsoftenpicturetheentirecommunityunderaglassorplasticbubble.Thebubbleisintendedtocreateanatmospherewithadequateoxygenandotheressentialelements.Butsimilarbubbl...