Higher headquarters and training missions are flown from Offutt AFB.The E-4B has numerous Forwarding Operating Bases (FOB) throughout the United States.是什么意思_Higher headquarters and training missions are flown from Offutt AFB.The E-4B has numerous Forwarding Operating Bases (FOB) throughout the United States.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句