This very simple program declares the two decision variables: the constraint and the objective function.
这个非常简单的程序声明了两个决策变量：约束和目标函数。
Because you never change the states of your variables, proving your program is much easier.
由于从来没有改变变量的状态，所以证明您的程序非常简单。
Variables serve as placeholders for data that can change during the execution of a program.
变量为数据提供占位，使得其可以在程序运行时改变。
Variables can be declared in several different parts of the program.
变量可以在程序的不同部分声明。
In the main program, you declare your variables.
在主程序，声明变量。
Right. We're not going to have 140,000 variables in my program.
对的，在我的程序中没有140,000个变量。
Right. We're not going to have 140,000 variables in my program.
对的，在我的程序中没有140,000个变量。
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