As we see a little bit later, I could talk about the carbon-hydrogen bond in methane where there is a plurality of bonds. In this case, there is only the one bond but I just want to get the formulas.

因为我们后来看到一点点，我能讨论甲烷中的碳氢共价键,那有许多共价键，这种情况下，这只有一条共价键,但我想得到氟。

麻省理工公开课 - 固态化学导论课程节选

Yeah! Also just on a... there's Thayer street which is about two blocks from here.

有！也就是在一个……有一条塞耶街，距离这里只有两条街。

闲暇时间在这里 - SpeakingMax英语口语达人

And so you feel helpless until you notice that there is, off to the right, a side track and at the end of that track, there is one worker working on the track.

你极为无助,直到你发现，在轨道的右侧，有一条侧轨,而在侧轨的尽头，只有一名工人在那施工。

耶鲁公开课 - 公正课程节选

A very simple language. And one rule.

简单的语言,只有一条规则

耶鲁公开课 - 心理学导论课程节选