Most dictionaries say the term "eighty-six" comes from employees in the restaurant industry.

VOA: special.2010.01.08

Not in the next problems set but in the problem set after that, we'll be exploiting that facility of dictionaries. All right.

好，下一个问题是,我们如何来利用,字典的便利性，好。

麻省理工公开课 - 计算机科学及编程导论课程节选

I can do lots of things with these, and you'll see that as we get to future assignments we'll make heavy use of dictionaries.

我们可以利用这一点来做很多操作,而且以后我们做作业的时候,我们会用到很多字典相关的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

Dictionaries are implemented using a magic technique called hashing, which we'll look at a little bit later in the term, which allows us to retrieve keys in constant time.

散列法的内容,此方法可以让我们在线性,时间内检索到键,因此字典的大小并不重要了。

麻省理工公开课 - 计算机科学及编程导论课程节选

So adding dictionaries, as Professor Grimson said with so many other things, doesn't give you any more computational power.

正如Grimson教授所说的那样,数组并没有给你更好的计算能力，但是它让一些工作大大的方便化了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now you might wonder, why do we have dictionaries?

现在你们可能会有疑惑了，我们用字典来干什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选