Foldbacks
(foldback 的复数) 返送（系统）, 监听（系统）
🗣️ 情景例句
It is not as difficult as it looks.
这并不像看起来那丢难。
How much is a one-way ticket?
单程车票多少钱一张？
I'm changing my hotel. I'll drop in and leave the new address.
我就要换一家旅馆了。我会顺便再来一趟，把新地址留下来的。