A：Flight BE 407 to Rome is delayed. Will passengers please wait in the lounge?
      飞往罗马的BE407 航班推迟起飞。请乘客在休息室等候。

departure的意思

B：Oh, how annoying!
      噢，真烦人！

A：The time of departure will be announced as soon as possible.
      起飞时间将尽快通知。

B：It’s infuriating! I have to be in Rome by five.
      真气人！我得在5 点以前到达罗马的。

1. 离开;启程;动身;出发
    Departure or a departure is the act of going away from somewhere.

    e.g. ...the President's departure for Helsinki...
           总统动身前往赫尔辛基
    e.g. They hoped this would lead to the departure of all foreign forces from the country...
           他们希望这将驱使所有外国部队撤离该国。

2. 辞职;离职;（从某组织的）脱离
    The departure of a person from a job, or a member from an organization, is their act of leaving it or being forced to leave it.

    e.g. This would inevitably involve his departure from the post of Prime Minister...
           这将不可避免地导致他辞去首相一职。
    e.g. Reihill's departure from the company is thought to follow disagreements with John Reihill Sr, who now controls the company.
           赖希尔从公司的离职被认为是因为与现在掌管公司的老约翰·赖希尔意见不合。

3. 违背;背离
    If someone does something different or unusual, you can refer to their action as a departure .

    e.g. Taylor announced another departure from practice in that England will train at Wembley...
           泰勒再次一改常规地宣布英格兰队将在温布利球场进行训练。
    e.g. Now she's written a novel which is not a mystery and is a considerable departure from her previous work.
           她现在创作了一部非推理小说，与她以前的作品大相径庭。