1. 劫持（飞机或其他交通工具）
    If someone hijacks a plane or other vehicle, they illegally take control of it by force while it is travelling from one place to another.

    e.g. Two men tried to hijack a plane on a flight from Riga to Murmansk...
           两名男子试图劫持一架从里加飞往摩尔曼斯克的飞机。
    e.g. A Korean airliner was hijacked by two passengers and forced to fly to Tashkent...
           一架韩国的大型客机被两名乘客劫持，被迫飞往塔什干。

2. 强行控制;操纵
    If you say that someone has hijacked something, you disapprove of the way in which they have taken control of it when they had no right to do so.

    e.g. A peaceful demonstration had been hijacked by anarchists intent on causing trouble.
           和平示威已遭到蓄意制造事端的无政府主义者的操控。