Pstn
[计] 公用电话交换网
🗣️ 情景例句
I know. I heard you talking about it
我知道。我听到你们谈论的那件事了，
Messengers should neither be headed nor hanged.
两国相争，不斩来使。
Mmm,it must be more delicious!
嗯，那一定更美味可口！