So, our detection devices are a little bit limited here today, we're actually only going to be using our eyes, so that means that we need to stick with the visible range of the electromagnetic spectrum.

我们今天所有的探测仪器十分有限，实际上我们要用我们的眼睛来观测，这意味着我们只能看到,电磁谱中的可见光区间。

麻省理工公开课 - 化学原理课程节选

It's only going to bind to fragments that contain that piece of the gene, and it will make those visible to you in some way so you can see where your gene traveled.

它只会和有那段序列的片段结合,从而能让你看到那段片段在哪里,你就可以知道目标基因片段到了哪个位置

耶鲁公开课 - 生物医学工程探索课程节选