talk-back circuit

例句：

1. 1. The talk-back circuit in the car helps to prevent accidents by alerting drivers to nearby obstacles.
   汽车中的回音电路通过警告司机附近的障碍物来防止事故。
2. 2. The engineer used a talk-back circuit to troubleshoot the issue with the new software.
   工程师使用回音电路来调试新软件的问题。
3. 3.The company implemented a talk-back circuit to improve communication between employees and management.
   公司实施了回音电路，以改善员工与管理层之间的沟通。