It gives you a lot of expressive convenience, you can write the programs much more cleanly, but most importantly, it's fast.

你可以把一些程序写的更清楚，最重要的是，它的效率非常高。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you're wondering what's OK or what's not OK, it's very clearly written out in this handout, so make sure you read through it, because it is your responsibility to make sure that your calculator does not have anything extra programmed in it.

如果你不清楚什么可以什么不可以，讲义上写得很清楚，所以请大家务必看完它，因为你有义务保证,在自己的计算器里,没有编上额外的程序。

麻省理工公开课 - 化学原理课程节选

So I don't know your mathematical background, but the textbook has an appendix, which is a reasonable measure of how much math you should know.

我不太清楚你们的数学功底,但教材上有附录,它能清楚地告诉你,你应该掌握多少数学

耶鲁公开课 - 基础物理课程节选

These are going to be fairly common-sense definitions, but they're important, and when you get to a problem set, really nailing down what the system is, not more, nor less, in terms of the amount of stuff, that's part of the system, it's going to be often very crucial.

这些是,很常识性的定义，但是很重要，当你要解决问题时，务必要搞清楚系统是什么，它包含多少物质，不能多也不能少，这往往,是非常重要的。

麻省理工公开课 - 热力学与动力学课程节选

Well, unfortunately in C, you have to be ever so specific as to what you wanna put in the variable.

很不幸，在C语言里，给变量赋值之前,你必须搞清楚它的数据类型。

哈佛公开课 - 计算机科学课程节选

So we have to come up--we mortals-- have to come up with some other device, and our device to remember things is to try to write it down because my premise here is, if you can write music down clearly you are hearing it, clearly, and you would have a better chance of remembering it if you could write it down.

因此我们普通人,必须开发出,不得不开发出一些其它的方法,而我们用来记忆的方法,就是试着写下来,它的前提是,如果你可以将听到的音乐清楚地写下来,很清楚,那么你就更有可能,记住它,前提是你能写下它

耶鲁公开课 - 聆听音乐课程节选

This tells you exactly what you want.

它清楚地表明了你的目的

耶鲁公开课 - 基础物理课程节选

This thing's nice because rather than do "if" and "and and" or "or or" and all of this, you can instead enumerate things a little more cleanly, albeit apparently at the expense of more white space.

这个东西是不错的，因为它不用“if“和“and，and“,或者“or，or“所有的这些，你可以用枚举来更清楚地表达它，虽然表面上它用了更多的空格。

哈佛公开课 - 计算机科学课程节选