secondary answering jack

例句：

1. 1. The secondary answering jack was designed to provide additional support for the main jack.
   辅助应答器被设计用来为主应答器提供额外的支持。
2. 2. The secondary answering jack was used to monitor the performance of the main jack.
   辅助应答器被用来监测主应答器的运行性能。
3. 3. The secondary answering jack was installed in a location that would not interfere with the main jack's operation.
   辅助应答器被安装在一个不会干扰主应答器操作的位置。