So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.

比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。

麻省理工公开课 - 化学原理课程节选

you have to cite to every single, everybody you're quoting or any authority that you're relying on.

你引用的每一点，你所依靠的每一个权威都要说明出处。

抄袭是很严重的问题 - SpeakingMax英语口语达人

And if you imagine Kagan not existing, then you're imagining that single thing, Shelly Kagan, not existing.

如果你想像卡根不存在,那么你也就是在想象那个唯一的东西,薛立·卡根不存在

耶鲁公开课 - 死亡课程节选

If you know you're not gonna output a full string %C but a single character, percent C will get that job done.

如果你不想输出一个完整的字符串,而是输出一个字母，就要用到。

哈佛公开课 - 计算机科学课程节选

Well, I mean the definite article "the", you use when there's only a single specific item that you're talking about.

当你谈论一个特定的项目时，就用定冠词“the” 。

经常犯的失误 - SpeakingMax英语口语达人

And so if you've imagined Shelly existing then of course you're imagining that single thing, Shelly Kagan, existing.

所以如果想象了薛立存在,那么当然你也就想象了那一个东西,薛立·卡根存在

耶鲁公开课 - 死亡课程节选