Yes, it's 7. So, I don't know if this is true or not, but I wonder if that's where the actual name 7-Up came from.

对，是七，我不知道这是不是真的，但是我怀疑这才是,七喜名字的真正来源。

麻省理工公开课 - 化学原理课程节选

Whether or not you believe it, you are familiar with the fact that some people believe it, or at least you wonder whether it's true.

不论你自己相信与否,毕竟,你知道有些人是相信的,最起码,你想知道它到底正不正确

耶鲁公开课 - 死亡课程节选

And I think sometimes people think I'm staring at them, and the young wowen think I'm going to persue them, but which is not true, and the others also wonder why is he staring at me.

我想有时候人们会认为,我在盯着他们看，年轻女子认为我想追求她们，但这不是真的，而其他人也在好奇为什么他要盯着我们看。

麻省理工公开课 - 电影哲学课程节选