因此，提高非正常航班的调度能力已经成为航空公司运行控制管理中的主要工作重点。
Therefore, to improve the management and scheduling abilities of irregular flight has become one of most important work emphases of airlines' operations control management.
因天气原因，航班非正常延误广播旅客们请注意。
Irregularity Delay Due to Weather Indefinite Time May I have your attention please.
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