And on six Sunday nights a year, ballroom dancers from as far away as St.Louis - two states away in Missouri - once again head to downtown Indianapolis to swing to the music of big bands and rekindle memories of long-ago dances and romances at the Roof.

VOA: standard.2010.02.25

She left, went far away, came all the way back a month later, and once again, got an audience with Gandhi.

她离开，长途返回，一个月后又回来，再次与甘地见面。

哈佛公开课 - 幸福课课程节选

and they play each other once at home, once away

它们互相踢一次主场，一次客场，

关于足球联赛 - SpeakingMax英语口语达人

You're hiding something from yourself, and once you know what's going on to deeper phenomena your problems will go away.

这些冲突被你压抑起来，一旦你理解了更深层次的冲突究竟是什么,你的问题便会得到解决。

耶鲁公开课 - 心理学导论课程节选

Because it's hard when you go back being part of any group. Once you are in that group, and away from other people, it's very hard to remember We've talked that -Oh, have you?

因为如果你回到原来的群体中,就会变得难了，因为你只要一呆在那个群体中，远离其他人，就很难,我们聊过这个，-是吗？

普林斯顿公开课 - 人性课程节选

And when I threw those away, I was left once again with a little box, and I could do it again, and again, and again.

剔除之后,我得到了更小的方格,我可以一次一次的重复这个过程

耶鲁公开课 - 博弈论课程节选

Once you throw your shield away and you're running, anybody who's got a weapon can take you out, and that's what would have happened. Yeah?

一旦你丢下了盾牌,开始逃跑,任谁拿着武器都能收拾你,战斗中大概就是这样,说说你的问题

耶鲁公开课 - 古希腊历史简介课程节选

And, in fact, once you teach an animal something, if you stop doing the teaching the response goes away and this is known as extinction.

事实上，条件反射形成以后，如果得不到强化,条件反应就会逐渐消失,这就是消退。

耶鲁公开课 - 心理学导论课程节选