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
Sorry, I have to say good-bye.
我不得不说再见了。
I will talk more about that in a moment.
目前我要多讨论那个问题。
Will you let us have the specifications?
规格说明书可以给我们吗。