Foldbacks
(foldback 的复数) 返送（系统）, 监听（系统）
🗣️ 情景例句
about taking care of babies, I assure you.
如何照顾小孩， 我向你保证。
Is the source of the information reliable?
那个消息的来源可靠吗？
In her letter, she said that she would come to England next year.
在信中她说她明年将到英国来。