課程簡介

Alexander Graham Bell was a famous scientist and inventor. He is most famous for his invention of the telephone…

你知道歷史上有哪些厲害的偉人嗎?誰發明了世界上第一台可用的電話?究竟是什麼原因讓他開始研究聲音科學?快跟著tutorJr一起來聽聽他們的故事吧!