It is a term for the Japanese words for "megaphone" and "translate", which actually makes g lot of sense because it's a megaphone that can translate Japanese into several other languages in real time.

它是日语中“扩音器”和“翻译”的意思，这其实很有道理，因为它是一种可以实时将日语翻译成其他几种语言的扩音器。