英语词汇cleared flight level怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	cleared flight level
释义	cleared flight level 简明释义许可空层网络释义 1 ?许可空层 ... LFL Lower Flight Level 低飞行高度 cleared flight level 许可空层 cruise flight level 巡航高度层 ... 短语 1 pre-cleared flight level 预放行高度 2 PCFL Pre-Cleared Flight Level 预放行高度
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英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。