"They need to start getting mammograms at age 40,". "Mammograms pick up cancers when they're smaller."

VOA: standard.2009.12.25

PROFESSOR: I want to take a few minutes at the start of today's lecture to wrap up a few more things about debugging.

教授：我想在今天讲座的开头,再花几分钟讲完调试的剩余内容,然后我们再讲主要内容。

麻省理工公开课 - 计算机科学及编程导论课程节选

We start at this lower energy state and go up that means we need to absorb a photon, we have to take in energy.

我们从一个低能级开始，到一个高能级去,这意味着需要吸收一个光子，我们要获得能量。

麻省理工公开课 - 化学原理课程节选

Please don't show up at 10:30 or 11:00 and start asking questions.

请不要在10点半或者11点0,开始提问。

麻省理工公开课 - 固态化学导论课程节选

Now, efficiency is obviously an important consideration when you're designing code, although I have to admit, at least for me, I usually want to at least start initially with code that works, and then worry about how I might go back and come up with more efficient implementation.

现在，当你设计程序的时候效率,是不得不考虑的问题，虽然我必须承认，至少对我来说,我是先担心程序能不能运行,再去把它的效率优化的,我喜欢可靠点的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

I served as Master of Silliman College for six years and during that time I would get up at 5 or 5:30 in the morning and start working.

我在西利曼学院当了六年院长,那时我会在早上五点或五点半起床,并开始工作

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

it's clear that you want to add a vector that looks like that, because then you go from the start of this to the finish of that, you end up at the same point and you get this invisible 0 vector.

显然应该给它加上这样一个矢量,因为从这个矢量的起点指向那个矢量的终点,最终指向的是同一个点,你就得到这个不可见的零矢量

耶鲁公开课 - 基础物理课程节选

So, if we're talking about five different orbitals and we're talking about a ground state atom, we know that we just need to start at the bottom and work our way out up.

因此，如果我们要讨论的是,五个不同的轨道且是属于一个基态原子的话，我们知道，我们只需要从最低的轨道,开始一个一个往上找。

麻省理工公开课 - 化学原理课程节选

So since it's a component of the angular momentum, that means that it's never going to be able to go higher than l is, so it makes sense that, for example, it could start at and then l go all the way up to l.

因为，它是，角动量的分量，这意味着，它不会，比l大，这是很容易理解的，比如说，它可以从零开始,一直到。

麻省理工公开课 - 化学原理课程节选