Rfwf
abbr. radio frequency waveform 射频波形
🗣️ 情景例句
How do I do that?
我该办什么手续呢？
My brother is not quite twenty-five.
我的兄弟不够25岁。
I spent the whole day in my room, but I did not write a single card!
我在房间里关了整整一天。然而竟连一张明信片也没写成！