And, that's a good thing to know because if you come out with an answer that's somewhere near the diameter of the universe and it's supposed to be the diameter of an atom, then you will know that you probably made a mistake.

这是我们需要知道的,因为当你做一道题得到的答案,是宇宙的直径,而正确答案是原子直径时，你能很快发现你的错误。

麻省理工公开课 - 固态化学导论课程节选

Remember that you can use it to express a need for you to do or have something,

记住，你可以用它来表达你做某事或得到某些东西的需求，

I need 课堂 - 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

And I do that very precisely because it'll teach you a little bit about how easy or difficult it is to do it and what kind of information you retrieve from a dietary assessment.

我这样要求是因为,这能教给你,做评估的难易程度,以及你们能从饮食评估中得到何种信息

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Well, for those of you who want to try it, you probably could pass this class and maybe even get an okay grade without doing the readings.

对于有些人如果你想试试看，你很可能能够通过这门课,甚至可能得到一个不错的评级,假使你不做课外阅读。

耶鲁公开课 - 死亡课程节选

You take all the risky assets ... and you analyze them first to get their-- you have to do a statistical analysis to get their expected returns, their variances, and their covariances.

你需要对所有的风险资产进行分析,首先要得到它们的-,你必须要做一个统计分析,算出它们的预期收益率，方差，和它们的协方差。

耶鲁公开课 - 金融市场课程节选

bug This is an easy bug to come up with. But imagine, if you don't do the test, you're going to get answers that don't make any sense.

这是一个容易发现的，但是想象下，如果你没做测试的话,你会得到没有意义的答案，实际上。

麻省理工公开课 - 计算机科学及编程导论课程节选

You could run through a little loop to say keep trying until you get one. But one of the ways I could deal with it is what's shown here.

你可以运行一个小循环来不断地做,直到得到一个输入,但你应该做的是弄明白这里到底要干什么。

麻省理工公开课 - 计算机科学及编程导论课程节选