We've talked about data, we've talked about operations, and we've talked about commands or statements. All right?

我们学习过操作，我们还学习过,命令或者说是声明了，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

We know what all those operations mean now.

我们已经明白了这些运算的含义

耶鲁公开课 - 基础物理课程节选

So we're to assume we can get to any piece of data, any instruction in constant time, and the second assumption we're going to make is that the basic primitive steps take constant time, same amount of time to compute. Again, not completely true, but it's a good model, so arithmetic operations, comparisons, things of that sort, we're all going to assume are basically in that in that particular model.

因此如果我们假设在恒定的时间内,我们可以取得任何一块数据,任何一种数据结构的话,我们要做的第二个假设就是,基本的原始操作计算花费的时间是恒定的,这个假设也不是完全正确的，但这个模型其实挺不错的，因此算法操作，比较，这一类的事情，我们在这个特定的模型中都假设是基本的,操作，花费的时间是恒定相同的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Can't use them on Booleans, they have a different set of things. They do things like AND, and OR. And of course there's a bunch of other ones in there, I'm not going to put them all up, but we're building up a little collection, if you like, of those operations.

这个方面的东西，它们不能被应用于布尔类型,布尔类型有其他的一系列操作,比如AND，和OR之类的，当然还有很多其他的,我不会把他们一一列出来，但是我们会学习这些操作的一部分。

麻省理工公开课 - 计算机科学及编程导论课程节选