Postmarking
vt. 在（邮件）上盖…的邮戳\\nn. 邮戳
🗣️ 情景例句
What's that?
什么问题？
What is happening up there?
上面发生什么事情？
They teach us Chinese and we teach them English. Please write soon!
他们教我们汉语，我们教他们英语。请赶快回信。