This is called "off-label" use of a drug.

VOA: special.2009.09.11

I call the second argument "The argument from recycling"-- not the best label I suppose, but I've never been able to come up with a better one.

我把第二个观点称为"循环观点",可能这不是最好的名称,但是我没有想到更好的

耶鲁公开课 - 死亡课程节选

Okay. I'm a producer for a record label called B-Boy Records. One of the original labels

好的，我是B-Boy唱片公司的制作人。B-Boy是最早成立的唱片公司之一。

告诉你们Hip-Hop - SpeakingMax英语口语达人

At a time when Country-pop is dominating the genre, the label allowed Easton to stay true to his traditional roots.

VOA: standard.2010.04.09

So, what happens here is this opening phrase, that we'll call A-- musicians like to label stuff just with alphabetical labels to keep it simple.

那么,首句这里,我们称作A,音乐家喜欢用字母,来做标记,这样比较简单

耶鲁公开课 - 聆听音乐课程节选