"When you put that all together it suggest that we are going to need something like 50 percent more, perhaps 100 percent more, food from our existing land and that is a very significant challenge and we believe we need to be thinking seriously about that right away,"

VOA: standard.2009.10.21

So whether we finish it today, or more likely when we finish it up on Friday, once we get passed isoelectronic atoms, that's it, that's all you need to study for this first exam.

因此，我们也许今天讲完，或者更有可能周五讲完，无论如何，就到我们讲完等电子原子为止，这是你们第一次考试所需要准备的全部内容。

麻省理工公开课 - 化学原理课程节选

And we haven't talked about reactions at all yet, so you don't need to worry about the specifics of that exactly, but just that if you have this negative change in energy, you have a more stable product than you do reactant.

当然我们还没有开始讨论反应，所以你不用担心它的细节是怎么样的，你只需要知道，如果能量的变化是负值，那么你将得到一个比反应物更稳定的生成物。

麻省理工公开课 - 化学原理课程节选

We need not just that you're all rational players, not just that you know each other's rational, but you know everyone else's rational.

不仅需要你们都是理性的参与人,不仅需要你们知道对方是理性的,而且必须知道所有人都是理性的

耶鲁公开课 - 博弈论课程节选

And so I joked, badly, I'll agree, at the end of last lecture, that we can just stop now, go straight to the final exam, because this is all you need to know.

所以我在上次演讲快结束时说了个拙劣的笑话，我会同意我们可以到此为止,直接进行期末考试，因为这些是你们需要知道的所有内容。

麻省理工公开课 - 计算机科学及编程导论课程节选

But for now all you need to know is - that these four different kingdoms-- one was where we now have Greece, another one was where Syria is, another was Egypt, and then there was another further north, but that's not as important for us.

不过目前你们只需要知道,这四个不同的王国-,一个是当今的希腊，一个是当今的叙利亚，一个是埃及，还有一个在更北面的地方，不过对我们来说不是很重要。

耶鲁公开课 - 新约课程节选

And, we'll tell you all you need to know except for how to draw them.

我会对他们一一详解,然不包括怎么去画。

麻省理工公开课 - 固态化学导论课程节选

You don't need all these different things that There is something about we are moving ourselves, and giving ourselves opportunity that is just literally done at a park.

你不用各种所谓的,我们所做的就是,动起来，给我们自己,与自然接触的机会,而这在公园里就可以做到。

普林斯顿公开课 - 人性课程节选

Now--it's important to bear in mind that this view is perfectly compatible with being a physicalist, after all we're not saying that in order to have personalities you need to have something not unphysical.

你们必须牢记，这个论调,与作为物理主义学者的身份,并不冲突，我们并不是说,要接受人格存在的概念,你就必须接受一些非物质的思想。

耶鲁公开课 - 死亡课程节选

Right, so to get all the way, good, so to get all the way, thank you So to get all the way to 1, we need a lot.

没错,所以这样一来,很好,所以这样一来,谢谢你,要让平均数到1需要很多条件的

耶鲁公开课 - 博弈论课程节选

Throw in whatever you want All we need to ask at that this point is is there any way at all to imagine immortality ? where immortality of that sort would be a good thing?

保证你想要的一切,我们这是需要问的是,有没有办法想象永生,这样的永生会是好事吗？

耶鲁公开课 - 死亡课程节选

You need to know how to think about them in the same way we think about s and p orbitals, but for example, you don't yet need to know what all of the names are except for this 3 d z squared here.

你们只要知道，如何像考虑s和p轨道一样,来考虑它们，但你们不需要,知道它们的名字,除了这个3dz2轨道外。

麻省理工公开课 - 化学原理课程节选