off air call setup

例句：

1. 1. We need to set up a conference call for the next meeting.
   我们需要为下一次会议设置一个电话会议。
2. 2. The technician needs to adjust the radio frequency for better reception.
   技术人员需要调整无线电频率以获得更好的接收效果。
3. 3.The engineer has to configure the television channel for the presentation.
   工程师必须配置电视频道进行演示。