Some folks on this particular website are a little more to the point.

有些人是专门为此,才登陆这个特别的网站的。

哈佛公开课 - 计算机科学课程节选

It was found in strain R, a particular strain of E.coli, and it was the first one found, There's a nomenclature that's evolved for this.

酶被发现于R菌株,大肠杆菌中一种特别的菌株,又是被发现的第一种内切酶,有一种专门为此制定的命名法

耶鲁公开课 - 生物医学工程探索课程节选