他的绘画技巧炉火纯青，人们极为钦佩。

People are most impressed by his painting skill.

但是，显而易见，如果你自身具备艺术素养，便能够磨炼得炉火纯青。

But obviously, if you have it in you, it can be honed to perfection.

我一直认为她是个很好的诗人，她对英语的掌握真是炉火纯青。

I've always thought she was a beautiful poet. Her grasp of the English language is magnificent.

为了加强党纪他们不惜倾众议院之力，并奖动员基干的工夫练的炉火纯青。

They brought state-of-the-art technology to the task of mobilizing their base, and centralized power in the House of Representatives in order to enhance party discipline.

我这只可怜的、无辜的老鸟骂人的本领炉火纯青，没有比它更聪明的了，你要明白这一点。

Here's this poor old innocent bird o 'mine swearing blue fire, and none the wiser, you may lay to that.