The regional administration of CAAC shall, when issuing a permit for using the civil airport, apply to CAAC for a serial number of the permit.是什么意思_The regional administration of CAAC shall, when issuing a permit for using the civil airport, apply to CAAC for a serial number of the permit.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句