To turn dross into gold; to transform something inferior into something superior or a masterpiece, often referring to revising or improving an article with great skill.
这位编辑妙手回春，把一篇平淡无奇的草稿修改得文采飞扬，真是化铁为金。
The editor, with a magical touch, transformed a mediocre draft into a brilliant article; it was truly like turning iron into gold.
Next Idiom