I'm not at all sure there's anything more to be said about that passage, which I think lays it to rest.

我不确定这篇文章是不是,还要更多的讲解，就这样的吧。

耶鲁公开课 - 文学理论导论课程节选

You just got to be looking around all the time to make sure you are not going to be run down.

你随时观察四周以确保你不会被撞倒。

伦敦的蓝色自行车 - SpeakingMax英语口语达人

Now, I'm not sure what kind of video we're talking about, and I'm not sure if the lecture will be the internet when we're all done. But nonetheless I'm gonna call this the next big thing-the video internet .

呃，我不确定我们要谈关于什么样的视频,我也不确定当这个讲座全部结束时,还是不是关于网络，但尽管如此,我还是要叫它为下一重大事件，网络视频。

麻省理工公开课 - 媒体、教育、市场课程节选

Plato's views on democracy were not all negative, to be sure.

并非都是负面的，这可以肯定。

耶鲁公开课 - 政治哲学导论课程节选

Generally, there are a couple of elements that one might set down as in a Petri dish, and wait to see if some chemical reaction might take place, but not at all sure of what it might be.

一般来说，都有几个元素,作者会把它们像放入培养基中一样培养,等待某种化学反应的产生，但对可能的结果却一无所知。

普林斯顿公开课 - 人性课程节选