“炼”造句

理查德告诉过我16世纪的三卷关于金术的对开本书籍的事。
Richard told me of three 16th-century folio volumes on alchemy.

激励他们的是金术, 即把普通金属变为金子的 “ 科学 ”.
What spurred them on was alchemy, the'science " of changing ordinary metals into gold.

中世纪的丹术士企图把贱金属成金.
Medieval alchemists attempted to transmute base metals into gold.