She was nineteen. Those who knew Ida Tarbell in college say she would wake up at four o'clock in the morning to study.

VOA: special.2010.04.25

And also, for those of you that did sign up for the pizza forum tonight, that's going to be at 5 o'clock, it's in room 56-502, so we'll see some of you tonight for that as well.

另外，对于报名参加,今晚的披萨聚会的同学，请注意聚会的时间是五点整，地点在，56-502，房间，因此，我们在今晚还会见到你们中的部分同学。

麻省理工公开课 - 化学原理课程节选

I like to stay up until midnight or even later on my natural clock.

我很喜欢熬夜,一直到午夜或者更晚,这是我的生物钟。

普林斯顿公开课 - 国际座谈会课程节选