talkbacks是talkback的复数

talkback

美 [ˈtɔkˌbæk]

英 [ˈtɔːkˌbæk]

n.（录音或播音室的）内部联络系统
网络对讲；对讲系统；语音反馈

复数：talkbacks

英英

网络释义

n.	1. a communication system in a radio or television studio that allows people to speak to each other without the audience hearing what they say 2. a call-in