off the beam

字典網

中英例句：

1. Never heard of her. You're off the beam.
   我從來沒有聽說過這個人，你搞錯了吧。
2. A radio signal tells the pilot of an airplane when his plane is off the beam.
   飛機脫離航道時，會有一個無線電信號告訴駕駛員。