Henry says there is not only a need to keep track of the nuclear weapons in the world.

VOA: standard.2010.08.06

My unwillingness to discuss them isn't a matter of my judgment that they're unimportant, just trying to keep at least roughly on track.

我不想讨论这些问题不是因为,我觉得它们不重要的，而是想尽量不要跑题。

耶鲁公开课 - 死亡课程节选

swap I'm going to keep track of a little variable called swap, it's initially true, and as long as it's true, I'm going to keep going, but inside of the loop I'm going to set it to false, and only if I do a swap will I set it to true.

我打算跟踪一个小的变量称为,初始值为真，只要它是真的,算法就会继续，但是在循环里,我打算把他设为假,除非交换发生，就把它设为真。

麻省理工公开课 - 计算机科学及编程导论课程节选

And it's actually critically important to get used to things because it's a useful adaptive mechanism to keep track on new events and objects.

而习惯化实际上也是至关重要的,因为这是一种非常有用的适应机制,可以让你注意到新鲜事物。

耶鲁公开课 - 心理学导论课程节选

This is one example that, without fail, people would say is a marvel of medicine and bioengineering, but that it's still something to keep track of.

刚才就是一个例子,在技术上我们并没有失败,人们也会称赞医学和生物工程的神奇,但仍然需要注意可能发生的情况

耶鲁公开课 - 生物医学工程探索课程节选

He just sort of plunges you into their speech, into their lives, and you have to, in a sense, work to get into their character to be able to keep track of who is speaking.

他就是将你拉入他们的语言他们的生活，某种意义上来说你不得不，努力去进入他们的角色,以便了解是谁在说话。

耶鲁公开课 - 现代诗歌课程节选

So let's listen to a track here, a sax solo and I am going to try to keep-- make some sense out of this-- because it gets more and more complex-- by following the electric bass underneath so let's listen to an old tape.

那么我们听一下这段音轨,一段萨克斯独奏,我会尽量从中,理出一些头绪,因为我们的音乐片段会越来越复杂,大家可以跟着底下电贝斯的节奏,好的,我们来一下老磁带

耶鲁公开课 - 聆听音乐课程节选

Well, you can use what's called an array which is kind of a list or a little satchel of that you might physically carry that you can put things in again and again, and with an array can you actually keep track of not just numbers but any kinds of things, other sprites or other pictures, or perhaps a little something like this.

你可以使用数组,它其实是个列表,或者说是个小包,你可以把东西一个个放到里面，通过数组你可以保存任何种类的变量,图片或者像，这个例子中的一些小变量，而不仅仅是数字。

哈佛公开课 - 计算机科学课程节选

Remember, you've got to keep track of the sign of acceleration, so if you're picking up speed towards the ground, a is negative, so it will be g plus a, but a is a negative number.

记住,一定要注意加速度的符号,所以当你加速下降的时候,a 是负的,还是 g 加上 a,但是 a 是负数

耶鲁公开课 - 基础物理课程节选

So you need hundreds of millions of doses, at least, and you need a way to distribute that around the world, and you need a way to keep track of who got sick and who didn't after they got vaccinated.

至少需要上亿支的剂量,还得有办法将疫苗运送到世界各地,你还要一种方法进行跟踪,在接种疫苗之后谁得病了和谁没得病

耶鲁公开课 - 生物医学工程探索课程节选