Backfeed loop
[化] 反馈回路
🧩 词语组成解析
反馈
loop
[lup]
n. 圈，环;[医]宫内避孕环;回路;弯曲部分;
vt.& vi. （使）成环，（使）成圈;以环连结;使翻筋斗;
🗣️ 情景例句
Hello, my name is ... May I speak to ...?
喂， 我叫……我可以和……讲话吗？
My brother wants to learn how to play the piano.
我的兄弟要去学弹钢琴。
In this way, he has begun his own private 'telephone' service.
就这样，他开始自己的私人“电话”业务。