The agreement,once it takes effect, will be the first under international law to target just this problem.

VOA: special.2009.12.08

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

Alright, so maybe a little underwhelming and we saw already what this program is going to do but let's just go through this process once before we start doing more interesting things and then we'll come back and at least give you a hint of what some of these syntactic details are doing.

好吧，这个程序也许太平庸了，让人印象不够深刻,我们也知道这个程序是干嘛的,在我们开始更有意思的事情之前,让我们再来讨论一下整个过程后再回来,这些语法细节到底是在做什么呢？,先给你们一点小小的提示。

哈佛公开课 - 计算机科学课程节选

Because Claire Elise would rather not have run, Let's try once more, Close your eyes again, just to keep life interesting, let's switch to this row.

因为克莱尔·伊莉斯还不如不参选,我们再试一次,把眼睛闭上,让游戏更有趣一点,我们换成这排吧

耶鲁公开课 - 博弈论课程节选

Say, we're just doing this once and don't expect it again.

就说,我们只分一次红,别想有下次

耶鲁公开课 - 金融市场课程节选

Now we worked through this just a little bit once before.

那我们比以前在深入一点

耶鲁公开课 - 聆听音乐课程节选