[航] 云上目視飛行規(guī)則 vfr = visual flight rule: 目視飛行規(guī)則visual flight rule vfr: 目視飛航規(guī)則visual-flight rule: 目視飛行規(guī)則visual flight ruleson top: 云上目視飛行visual flight: 目視飛行下載手機詞典可隨時隨地查詞查翻譯