Answerback unit
[电] 应答器
🧩 词语组成解析
[电] 回答
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
What's your regular practice concerning terms of payment?
你们常用什么付款方式？
It's up to us to help those in need.
我们有责任帮助那些有困难的人。
Happy birthday! they said.
“生日快乐！”他们说。