This is the first time the aviation authority utters concrete efforts in such detail concerning flight delays.
这是民航负责人在处理航班延误问题上第一次具体表态。
Two opposing scenarios, the "arboreal" hypothesis and the "cursorial" hypothesis, have traditionally been put forward concerning the origins of bird flight.
关于鸟类飞行的起源，传统上提出了两种对立的假设：“地栖说”和“树栖说”。
"Gagarin was aware of the fears concerning zero gravity, and he also knew about all failed launches preceding his flight, " but he never showed any fear or doubt, Ivanovsky said.
“Gagarin清楚对于零重力的担忧，他还知道飞行之前所有失败的发射。”但是他没有表现出害怕和疑虑，Ivanovsky说到。
What are the requirements concerning the evaluationand use of passengersupplied electronic devices that assistpassengers with respiration in the cabin during flight.
对允许旅客在航班客舱内使用的自带的呼吸辅助电子设备和使用有哪些规定。
Learning how to ask questions concerning a flight reservation: destination, dates, times of departure and arrival, as well as the number of passengers.
学习如何询问包括订机票时目的地、日期、起飞时间和抵达时间，同时还有乘客人数等。
The problems concerning an aerospace vehicle's(ASV) atmospheric reentry flight attitude control system were researched.
研究了空天飞行器（ASV）再入跨大气层飞行时的姿态控制问题。
The problems concerning an aerospace vehicle's(ASV) atmospheric reentry flight attitude control system were researched.
研究了空天飞行器（ASV）再入跨大气层飞行时的姿态控制问题。
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