answer-back unit应答器;回答器;应答装置英语
answer-back key应答电键;应答电键英语;翻译
answer-back signal应答信号;回答信号;应答信号英语
key answer-back应答电键
Answer-back circuit应答电路
answer-back device翻译;应答装置英语
answer-back回答
answer-back simulator应答模拟器
answer-back code回应码;应答电码;响应代码;应答码英语
PHRASAL VERB（动词词组） If someone, especially a child, answers back, they speak rudely to you when you speak to them. 顶嘴 [英国英语]
My youngest child is eight and she has started answering back too.
我最小的孩子8岁，也已经开始顶嘴了。