起飞前放行许可 pre-departure clearance ; PDC
在飞机起飞前 Vor dem Start des Flugzeugs ; Bevor das Flugzeug startet ; Bevor das Flugzeug abhob
起飞前夕 the pre-condition take-off
回程起飞前维护 turnaround maintenance
休眠起飞前 Before takeoff of dormant
休眠的起飞前 Before takeoff of dormant
起飞前的休眠 Before takeoff of dormant
飞机起飞前广播 Announcement before Taking off
飞机起飞前一个半小时 A half hours before flight
航班应在起飞前48小时予以确认。
据报道，起飞前在飞机上工作的技术工程师将接受警方的询问。
Technical engineers who worked on the plane prior to takeoff are reportedly going to be questioned by the police.
原计划的发射在起飞前四分钟被取消。
The original planned launch was called off four minutes before blastoff.
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