One possibility is the Technology Satellite of the 21st Century,or TechSat 21,a concept being studied by the Air Force Research Laboratory.是什么意思_One possibility is the Technology Satellite of the 21st Century,or TechSat 21,a concept being studied by the Air Force Research Laboratory.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句