他们预计在三点钟以后到达。

They plan to arrive some time after three.

《牛津词典》

我最后一节课是在三点半结束。

My last class is over at 3:30.

youdao

我从来没有在三点钟以前睡觉过。

I never get into bed before three o 'clock.

youdao

So I think that's the three very critical decisions I made during the early days of Baidu.

以上三点就是我在百度早期,作出的重要决定。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

And she plays her music really loud at three in the morning.

她还喜欢在凌晨三点大声地放音乐。

I hate 课堂 - SpeakingMax英语口语达人

Just want to let you know that there will be an information session this afternoon, from 3 to 4:30 in Harvard Hall, room 103.

希望大家知道,今天下午有一个咨询会，在哈佛大厅103教室，从三点到四点半。

哈佛公开课 - 幸福课课程节选