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

Okay, this thing is bad because...

你看，这个仪器不好用，因为……

MIT用数字说话 - SpeakingMax英语口语达人

Maybe he points his little light detector at it and it reads out.

他可能会用一个光检测器对准苹果,仪器显示计量结果

耶鲁公开课 - 死亡课程节选

Right, but what instruments will you need to measure it?

对,但你需要用什么仪器来测量呢

耶鲁公开课 - 基础物理课程节选