不过航空运输延迟和低效的主要原因还是过时的空中交通管制——一套依靠地面控制、反应迟缓的雷达站和不断重复的语音通讯建立起来的体系。
But delays and inefficiencies in air travel are due in large part to an outdated traffic-control system that still relies on slow, ground-based radar stations and repetitive voice communication.
如果未及时包含出口管制名单的更改，则可能导致在IBM的Integrated Supply Chain流程中出现延迟。
If changes to the export control lists are not incorporated in a timely fashion, it may cause delays in IBM's Integrated Supply Chain processes.
由于本公司责任，交通管制，天气等不可抗力造成班次晚点延迟的，旅客可根据需要改乘其他班次或者退票。
Tickets could be refunded with no extra charge if the shifts are delayed or canceled due to Beijing City Bus Tour Serivices, government traffic control, weather or other Force Majeure.
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