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
Good-bye, and thanks for bringing Gemma in.
再见，谢谢你们把Gemma送来。
May I try it on?
我能试试吗？
Not all sounds made by animals serve as language.
动物发出的声音不都是用作语言交际。