It was four o'clock in the afternoon when Paul woke up.

VOA: special.2009.04.11

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 wake up early in the morning by 8 o'clock.

我早晨八点起床。

布朗克斯的足球教练 - SpeakingMax英语口语达人

"Three or four hours before I could fall asleep. I wake up three o'clock in the morning with the same stuff on my mind, tossing and turning.

VOA: standard.2010.05.04

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

but she has not had the best of luck in the romance department and, with her biological clock ticking away, she has decided the "right guy" may never show up.

VOA: standard.2010.04.30