hijacker

例句：

1. 1.The hijacker demanded that the plane be turned around immediately.
   劫机者要求立即将飞机掉头。
2. 2. He was arrested for hijacking a flight.
   他因劫持航班被逮捕。
3. 3. Hijackers are dangerous criminals who take over airplanes to cause chaos.
   劫持者是危险的罪犯，他们会劫持飞机制造混乱。