Ringback
回铃声（电话服务）；有回铃音的电话
🗣️ 情景例句
All right!
好的！
Would you please give us a rough idea of the quantity you require?
请告知你方大概要订多少？
I assure you that you will feel no pain at all.
我保证你根本不会觉得疼的。