电气石用英语翻译为 "electric stone"。它的来源是古代发现了一种石头，它可以通过触摸或捶打产生电流。这种石头被称为电气石。例句：
The ancient Greeks discovered electric stones, which they used for electrotherapy.
(古希腊人发现了电气石，他们用它来进行电疗。)
Electric stones were once used to treat headaches and other ailments.
(电气石曾经被用来治疗头痛和其他疾病。)