Semiduplex
[电] 半双工
🗣️ 情景例句
I would like to make an appointment for a hairdo, please.
我想预约理发， 劳驾。
The post office is two blocks straight ahead, You can't miss it.
那邮局一直向前走过两条街，很好找。
Yes, speaking.
是我，请讲。