So it doesn't matter how big the dictionary is, you can instantaneously retrieve the value associated with the key. Extremely powerful.

因为你可以在线性时间，内得到想要的键对应的值,这太强大了。

麻省理工公开课 - 计算机科学及编程导论课程节选

then maybe everyday go through the dictionary

可能就是每天翻看字典，

有这样的困难 - SpeakingMax英语口语达人

What you can do is you can iterate keys, which gives you the keys in the dictionary, and then you can choose them, but there's no guarantee in the order in which you get keys.

你能做的就是迭代得到键，这样就可以得到字典中，所有的键并进行选择，但是键的顺序,是没有保证的。

麻省理工公开课 - 计算机科学及编程导论课程节选

When we get to the spell checking, the dictionary assignment, when you're actually manipulating text files, maybe writing some output, these lower level details that actually empower you to solve problems properly.

当你检查拼写时，字典查询，当你熟练运用这些文本文件时，可能是写一些输出文本，这些小细节,恐怕可以帮助你合理解决问题。

哈佛公开课 - 计算机科学课程节选

Of course, as you have guessed, the good reader is the one who has imagination, memory, a dictionary and some artistic sense, which sense I propose to develop in myself and others whenever I have the chance.

当然，就像你们猜到的那样，好读者拥有想像力、好记性、,一本字典和几分艺术感，我建议一有机会,就进行自我及他人的艺术感培养。

耶鲁公开课 - 1945年后的美国小说课程节选

They take those descriptions and the scientist that is known and they try to design new things, and so if you look at a dictionary it has words like this, that you're designing things or another way to say that is that you're trying to apply science, you're looking at applications.

他们利用已知的,科学原理和描述,来设计新东西,因此,如果你查字典时看到这样的词条,设计产品或者换句话说,试图应用科学原理,那么你看的这个词就是应用

耶鲁公开课 - 生物医学工程探索课程节选

Here I'll initiate the memo to be 0, or to be empty, rather, the dictionary.

在这里我会将memo初始化为，或者为空，作为记录字典。

麻省理工公开课 - 计算机科学及编程导论课程节选

And the memo will be a dictionary that maps me from a number to Fib of that number.

这个memo就是我从一个fib数,到另一个fibs数的记录字典。

麻省理工公开课 - 计算机科学及编程导论课程节选

Remember the way dictionary works, this is the key. Is the key of a value.

记住这个字典的工作原理，这是关键，它是值的关键。

麻省理工公开课 - 计算机科学及编程导论课程节选

The reader should have a dictionary."

读者要有本字典“

耶鲁公开课 - 1945年后的美国小说课程节选