885. Is there a frequency change at this compulsory reporting point?
885. 该强制报告点的频率是否有变化？
| 单词 | compulsory reporting point |
| 例句 |
原声例句
ICAO民航英语 885. Is there a frequency change at this compulsory reporting point? 885. 该强制报告点的频率是否有变化？ |
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