callsign
n. 通信呼号
例句
What's the prefix of your callsign?
你呼号的前缀是什么？
My callsign is BH1IEO, please make it activated. Thanks!
我的呼号是BH1IEO，请激活，谢谢！
I'm sorry, I didn't copy your callsign. Please again slowly.
对不起，我没有抄收你的呼号，请慢慢重复。
