"Why should we do something when we've already done it?" But he recognizes that some people have strong feelings about the issue.

VOA: special.2010.04.28

And the first thing you do is ask is it an instance of some problem that other people have already solved?

而且你以前从没碰过这个问题,你首先要做的一件事就是问问自己,这是不是一个别人已经解决了的问题？

麻省理工公开课 - 计算机科学及编程导论课程节选

because you've already done it or you don't need to do something because you've already done it before.

因为你之前已经做过，或者你觉得因为之前做过就没有必要再做了。

I've already 课堂 - SpeakingMax英语口语达人

"Why should we do something when we've already done it." "Going to the moon or going to Mars is about as interesting to people as say going to Antarctica."

VOA: standard.2010.04.15

- If someone-- you're-- one of you're predecessor didn't already submit it, do follow the directions at top left which says, add calendar so that we can augment the data set even further.

如果-,除非前任代表没有提交相应信息，一定要遵循左上方的用法说明，添加日历,这样就可以进一步增大数据集。

哈佛公开课 - 计算机科学课程节选

That's certainly one way to do it, but for computers that's not necessarily the easiest way. So another way of solving it is to do something we already saw last time, which is basically, why not simply enumerate all possible examples and check them?

将一个等式代入另一个等式，这当然是一种办法,但是对电脑来说这绝对不是一件简单的事,所以解决这个问题的办法，正如我们上一次看过的,非常基本？

麻省理工公开课 - 计算机科学及编程导论课程节选

Well I stated it, but Plato didn't state it in the dialogue, the worry that even if the soul was one of the parts even if the soul is already around before we were born, how do we know it can't come apart.

我说出来了，但柏拉图在对话里并没有说，就是一种担心,即使灵魂是组成我们的一部分,即使灵魂在我们出生前,就已经存在了，我们怎么能知道它不会瓦解呢。

耶鲁公开课 - 死亡课程节选

I will be also making them available at Allegra for people who would like to just purchase them already printed out so you don't do it yourself, but I know some people really prefer to work online--and certainly for the first week of reading, you can get started because it is online.I don't think things will be available at Allegra's until probably tomorrow afternoon.

我也同样会让这些书的纸质版,能够出现在学校书店这样喜欢读纸质版的同学,就不用到处去买了，但我知道有一些学生更喜欢,在网上阅读，当然第一周的阅读材料都已经放在，放在网上了你们可以开始阅读，所有的阅读材料,在明天下午后都能在学校书店里买到。

耶鲁公开课 - 旧约导论课程节选

that the suggested action has already been taken and therefore you do not want to do it again.

已经发生过的行为，因此你已经不再想重复了。

I've already 课堂 - SpeakingMax英语口语达人

The noble families of Greece,and we see it already in Homer, typically claim descent from some god or other and ordinary people do not have that ability.

希腊的贵族家族,我们在荷马身上已看到了,典型地声称贵族权力由神祇所授予,并表示普通人没有那种能力

耶鲁公开课 - 古希腊历史简介课程节选

They're already paying for public transport, so it's just kind of a financial expense they could do without.

他们已经向公共交通付钱了，所以，那只是一笔没有必要的财务支出。

公共交通更方便 - SpeakingMax英语口语达人

Odds are if you're an upperclassman, you've had that experience where it's 12 AM, 1 AM, 2 AM, and you're really starting to stress over the incompletion of some problems that for some course, well frankly what this mechanism allows you to do if you're already 90 percent of the way there, you can call it a night and you can put it down and you could feel good nonetheless about where you got to.

对于上游的同学可能觉得无趣，因为他已经具备了这些经验，这时应该开始关注某些课程中,问题的不完整的部分，如果你已经学会了,里面90%的知识，你可以停工,或者把这门课扔到一边。

哈佛公开课 - 计算机科学课程节选

Are you indifferent,or do you care whether you're one of the people who's already had it ? or somebody who hasn't yet had it?

你无所谓还是在意,你是已经做过手术的人,还是尚未做过手术的人？

耶鲁公开课 - 死亡课程节选