Next, it has several instance variables.
接下来，它有一些实例变量。
The instance variables are broken into five groups.
实例变量分为五组。
The TestsRulesEngine class has only two instance variables.
TestsRulesEngine 类只有两个实例变量。
The action method copies any instance variables to the view.
动作方法把实例变量拷贝到视图。
Specifically, how an object stores its instance variables in memory.
特别是对象如何在内存中存储其实例变量。
When you define a new class, you can specify instance variables.
当定义一个新类时可以定义实例变量。
The issue is for classes that have a small number of instance variables.
问题出在拥有少量实例变量的类上。
At the end, all your instance variables are now assigned to the view components.
最后，将所有实例变量都分配给视图组件。
We can see that the instance contains the instance variables declared in the class.
我们可以发现这个实例包含了所有在类中声明的实例变量。
Add the following instance variables right after the class definition as shown in listing 1.
在类定义之后添加以下实例变量，如清单1所示。
You will repeat this action for all the view components with the corresponding instance variables.
您将使用相应的实例变量对所有视图组件重复此操作。
You will repeat this action for all the view components with the corresponding instance variables.
您将使用相应的实例变量对所有视图组件重复此操作。
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