小镇的故事即是小镇历史，这个我不清楚，可以直接百度或谷歌一下。

Even the story of a small town small town history, this I do not know, you can look directly Baidu or Google.

youdao

我不清楚这个句子的意思。

The meaning of this sentence is not clear to me.

youdao

我对这个问题不清楚，只能不赞一词。

I'm not clear about this matter, so I had better keep quiet.

《新英汉大辞典》

I don't know if I'm repeating this but he was at his dentist I didn't tell you this.

我不清楚我是否在重复这个,但是他当时是在他牙医的诊所-我没有告诉你吧。

耶鲁公开课 - 金融市场课程节选

But I can't see that little box, so what I'm going to do is i'm going to redraw that little box.

但是现在这个小方格看不太清楚,接下来我重新画一下这个小方格

耶鲁公开课 - 博弈论课程节选

So, that is just a quick example for some of you, you might be very familiar with ion channels, others might not know what these are, so I'll just tell you quite briefly that ion channels are these very massive transmembrane proteins.

这对你们中的某些人来说仅仅是个小例子，有些人可能已经非常熟悉离子通道这个概念了，但有些人可能还不清楚，那么就让我来简单地介绍一下离子通道,就是这些巨大的跨膜蛋白。

麻省理工公开课 - 化学原理课程节选