After all, I'm going to try and build a simulation of the stock market, so I might as well have the notion of a market, and probably the notion of a stock.

不管怎样,我得建立一个股票市场的仿真程序，所以我最好要有股票的概念，和股市的概念。

麻省理工公开课 - 计算机科学及编程导论课程节选

So in fact, it is the case, if you look at data, and by the way, that's the way I ended up setting a lot of these parameters and playing with it, was comparing what my simulation said to historical stock data.

所以实际上，在这个例子中，如果你看到数据，顺便说一下，这就是我设置很多变量,然后编程的方式，也就是把我的仿真程序得到的结果,和历史股票数据进行比较。

麻省理工公开课 - 计算机科学及编程导论课程节选

So it's got an internal procedure,internal function, local to the unit test, that runs the simulation.

它有内部过程，内部函数，它对unit，test来说是有本地环境，来支持股票仿真程序的运行。

麻省理工公开课 - 计算机科学及编程导论课程节选