This is the phrase that I've used in some stuff which I've done with a think tank in London called Demos, where we've been looking at these people who are amateurs -- i.e., they do it for the love of it -- but they want to do it to very high standards.
这个词组我曾经在 给伦敦的一个 叫作德莫斯的智囊公司做的一些东西里面用过， 在那里我们曾经研究过这类人，他们是业余的―― 也就是说，他们是因为热爱某件事情―― 但是他们想把它做到非常高的标准。