定期航班的数量使空中交通控制系统受到压力。
The volume of scheduled flights is straining the air traffic control system.
泛美航空开创了第一个定期的国际航班。
Pan Am inaugurated the first scheduled international flight.
一旦有了定期的飞机航班，乘坐远洋客轮出差就变得不切实际了。
Once there were regularly scheduled airlines, it became impractical to make a business trip by ocean liner.
应用推荐