speaking trumpet 同义词

speaking trumpet是什么意思

翻译和释义

speaking trumpet 英文释义：a trumpet-shaped acoustic device to intensify and direct the human voice; formerly held to the ear by a hard-of-hearing person
speaking trumpet 中文翻译：传话筒；扩音器。

speaking trumpet的同義詞，speaking trumpet相同意義的詞匯，speaking trumpet synonyms