Rdf
无线电测向器, 无线电定向仪, 无线电探问, 无线电测向
🗣️ 情景例句
Yes, I know that.
是的 ，我知道。
Congratulations on your graduation.
我恭喜你毕业了。
He asked me for a meal and a glass of beer.
问我要一顿饭和一杯啤酒。