我只去过那里一次。

I've only been there once.

《牛津词典》

我要安排一次会议。

I'll fix a meeting.

《牛津词典》

那是我最后一次见到她。

That was the last I ever saw of her.

《牛津词典》

The Faith Council in my view is not a group of people who come together and pontificate several times a year and put a sheet for the President at the end of the year.

在我看来，信仰委员会不是,一群人聚在一起,一年发表几次高论,然后在年末呈交给总统一页纸。

普林斯顿公开课 - 人性课程节选

When I started merging, I did merging three times across this whole board, this level, this level, and this level, and each time because of the way I was advancing my fingers I touched each number just once.

在整个过程中，我一共做了,三次合并，这一层，这一层，和这一层，而且每次,由于要前移手指，因此对每个数字,仅仅移动了一次。

哈佛公开课 - 计算机科学课程节选

The other quick thing I want to say is that I do have office hours today from 3 to 5, so feel free to stop by if you have questions about problem-set 3 that you're finishing up.

我还想说一件小事,我今天的答疑时间是三点到五点，如果你对于第三次作业还有任何疑问,请在这个时间段来找我，不必客气。

麻省理工公开课 - 化学原理课程节选