alchemy

中世纪的炼金术士们相信炼金术可以将铅转化为黄金。

Medieval ___alchemists believed that ___alchemy could turn lead into gold.

在昏暗的工作坊里，炼金术的实践者小心地在炭火上加热一只坩埚。

In the dimly-lit workshop, the practitioner of ___alchemy carefully heated a crucible over a charcoal fire.

他花了多年时间研究炼金术，坚信通过正确的元素组合可以造出贤者之石。

He devoted years to studying ___alchemy, convinced that the philosopher's stone could be created through the right combination of elements.