off the beam

• adj. 未按无线电射束飞行(不对头)

off the beam的用法和样例：

例句

1. Never heard of her. You're off the beam.
   我从来没有听说过这个人，你搞错了吧。
2. A radio signal tells the pilot of an airplane when his plane is off the beam.
   飞机脱离航道时，会有一个无线电信号告诉驾驶员。