I generally [usually] get up at six o 'clock.

我通常6点钟起床。

《新英汉大辞典》

I anticipate his arrival at four o 'clock.

我期待他4点钟到达。

《新英汉大辞典》

We arranged with him to meet at the hotel at one o 'clock.

我们和他约好1点钟在旅馆碰头。

《新英汉大辞典》

The workers would come into this store at seven oclock in the morning and work until twelve oclock at night.

VOA: special.2010.03.03

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

So you can go at 7 o'clock in the evening and kids are not allowed,

所以，你可以在晚上七点的时候去，那时候，孩子就不可以进去了，

神奇的博物馆 - SpeakingMax英语口语达人

Mr. SAMUEL STATLAND (Polling volunteer): If you're in line at 8 o'clock and are identified as being in line at 8 o'clock, you will vote on the touch screen machines.

NPR: For Santorum, Race Momentum Swings

The troops went out about 7 o'clock at night and came back at about 11 o'clock.

CNN: Van Marsh: Troops celebrated at end of raid

Rehearsal's at 2 o'clock at my house, and I'll see you then.

NPR: Joanne Brackeen: A Maelstrom On The Keys