Pstn
[计] 公用电话交换网
🗣️ 情景例句
Look, the Kramers are showing off in their new convertible.
看，克来姆一家在炫耀他们的新敞蓬车。
He was renowned as a portrait painter.
他以肖像画家著名。
I've just called the Frist Aid Centre.
我刚才已经给急救中心打了电话。