tape request word

例句：

1. 1.The tape request word is a crucial part of the recording process.
   磁带请求词是录音过程中至关重要的一部分。
2. 2. The engineer used the tape request word to indicate the beginning of the recording.
   工程师使用磁带请求词来指示录音的开始。
3. 3.The tape request word was programmed into the machine before the recording began.
   在录音开始之前，机器已经编程了磁带请求词。