What I plot on this graph here is as a function time, years, dates, life expectancy as a function of time.

在这儿的这张图是,一个关于时间,年,日期的函数,将寿命长短作为时间的函数

耶鲁公开课 - 生物医学工程探索课程节选

If you have a project at work that is taking a lot of time and the deadline is coming up very soon,

如果你在工作上接手了一个项目，已耗费了大量时间，而交付日期马上就要到了，

There is 课堂 - SpeakingMax英语口语达人

But you shouldn't take the date that I give you, the traditional date, as being firm.

但是我所提供给你的日期历史久远,并不能当做确切的时间加以使用

耶鲁公开课 - 古希腊历史简介课程节选

In order to attend, you must know the date and the time. You can ask your friend, "When is your wedding?"

为了能够出席，你必须知道具体的日期和时间，你可以问你的朋友，“When is your wedding？”

When 课堂 - SpeakingMax英语口语达人