Sandra Magnus, who arrived aboard Endeavour, will switch seatliners with station astronaut Greg Chamitoff and replace him as Expedition 18 Flight Engineer.是什么意思_Sandra Magnus, who arrived aboard Endeavour, will switch seatliners with station astronaut Greg Chamitoff and replace him as Expedition 18 Flight Engineer.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句