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

I can meet you on Tuesday, right? Six o'clock is good.

我可以在周二见你，对吗？6点钟不错。

I can 实战 - SpeakingMax英语口语达人

All right, one o'clock, you take the mantle back on.

好吧，1点整，你又装上了思想戒备。

耶鲁公开课 - 死亡课程节选

If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.

如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上

耶鲁公开课 - 基础物理课程节选