The museum tour guide explained how medieval alchemy slowly developed into modern chemistry.

博物館導覽員解說了中世紀煉金術如何逐漸發展成現代化學。

Our travel package includes a lecture on alchemy at the old castle in Prague.

我們的旅遊套裝行程包含在布拉格古堡舉辦的一場煉金術講座。

The marketing director joked that turning this budget into profit would require alchemy.

行銷總監開玩笑說，要把這筆預算變成利潤得靠煉金術才行。