The E-4B National Airborne Operations Center supports the National Command Authority (NCA) and the Chairman Joint Chiefs of Staff (CJCS).是什么意思_The E-4B National Airborne Operations Center supports the National Command Authority (NCA) and the Chairman Joint Chiefs of Staff (CJCS).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句