Suppose you could build a circuit with the following property: the input to this circuit would be any other circuit diagram.

假设你能用如下物品,建立起一个线路：,这个线路的输入设备,可以是任意一个其他线路的流程。

麻省理工公开课 - 计算机科学及编程导论课程节选

It could be, preconditions I want to have on input It could be, explanations of specific things you're doing.

也可以是我对输入的预期是什么,也可以是，对代码,正在进行的特定操作的解释。

麻省理工公开课 - 计算机科学及编程导论课程节选

You have to jump through hoops just to ask the user for a piece of input which should be really the thing a language prioritizes.

你要百依百顺才能从用户那里得到一个输入,这个输入可能只是一个,语言优先级。

哈佛公开课 - 计算机科学课程节选

For a couple of reasons. In some ways, this would be nicer, do expected cases, it's going to tell you on average how much you expect to take, but it tends to be hard to compute, because to compute that, you have to know a distribution on input.

关注最快的情况，在某种意义上来说，因为一些原因这样想挺不错的，当我们处理一个给定的问题,计算平均时间的时候,是很难计算的，因为你并不知道输入的分布情况,这些输入会是怎么样的呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

It is certainly possible, for example, that a quadratic algorithm could run faster than a linear algorithm. It depends on what the input is, it depends on, you know, what the particular cases are. So it is not the case that, on every input, a linear algorithm is always going to be better than a quadratic algorithm.

一个二次平方级复杂度的算法,当然也是可能跑的比线性复杂度算法快的,这取决于，你知道的，输入以及特定的案例，因此并不是对于每个输入,线性复杂度就一定会,比二次平方级复杂度的算法的表现要好,只是通常来说是这样的。

麻省理工公开课 - 计算机科学及编程导论课程节选