释义
纯：纯粹；青：蓝色的；纯青：炉火的温度达到最高点。相传道家炼丹；到炉子里的火焰从红色转成纯青色的时候；就算成功了。比喻功夫造诣已达到了精湛、纯熟、完美的地步。
用法
主谓式；作谓语、定语、状语；指学问、技术等。
出处
唐·孙思邈《四言诗》：“洪炉烈火，洪焰翕赫；烟示及黔，焰不假碧。”
例句
到了现在，可已到了炉火纯青的气候，正是弟兄们各显身手的时期。清·曾朴《孽海花》第二十五回
他的手腕，他的机智，已到了‘炉火纯青’的程度。洪深《五奎桥》第一幕
有的人技术纯熟，像袁廷发那算到了炉火纯青。艾芜《百炼成钢》十三
英文用法
简明释义
perfection in one's studies；come to a head；got exactly the results desired；high degree of professional proficiency；
例句
多勃雷宁机敏而又训练有素，态度温和而行动谨慎，他以炉火纯青的技巧往来于华盛顿的上层社会。
Subtle and disciplined, warm in his demeanor while wary in his conduct, dobrynin moved through the upper echelons ofwashington with consummate skill.
而这个能量库所能起到的作用是对艺术运用到炉火纯青的程度，这个是相辅相成的过程。
But the function of energy storeroom is that they use art proficiently and this is process complement each other.
后来又将油彩加入内画技法，打破了传统单一的水彩作画的局限，使内画的图、形、神达到炉火纯青的地步，被称为“中西合璧”的壮举。
Oil will join later in the painting techniques, a single break of the traditional limitations of watercolor painting, the paintingplans, shape, god reached luhuochunjing stage, called the "chinese and western" feat.
这里，荟萃了世界上最好的制作大师，把意大利美食演绎的炉火纯青，别具一格。
Here, gather together the best masters in the world, make the italy cate reach a high degree of excellence and distinctive.
以其画风发展来看，早年笔墨较清新整饬，中年以后渐趋雄肆，晚年则炉火纯青，真率自然，不假修饰。
Perspective of the development of its style, early ink cleaner straighten out, middle age, becoming male iv is reached apinnacle in his later years, straightforward nature, not in the modification.
