我们并不希望允许终端使用者直接地存取实体变数或者某个特定实作的细节。
We don't want to allow access directly to the Instance Variables or to the specific implementation details.
当透过指向相同执行个体的其他变数来存取时，您对类别成员值所作的变更会影响这些成员。
Changes you make to the values of class members affect those members when accessed through another variable pointing to the same instance.
用户端程序码是使用这些变数呼叫方法并存取物件之公用属性的程序码。
Client code is the code that USES these variables to call the methods and access the public properties of the object.
由于没有执行个体变数，您要使用类别名称本身存取静态类别的成员。
Because there is no instance variable, you access the members of a static class by using the class name itself.
多个执行绪可能需要存取共用资料库，或是对一组系统变数进行更新。
Multiple threads may need to access a Shared database, for instance, or make updates to a set of system variables.
变数和属性都代表可存取的值。
Variables and properties both represent values that you can access.
多重执行绪可以同时存取应用程序状态变数。
Application state variables can be accessed by multiple threads at the same time.
确定已正确设定环境变数TMP和TEMP，也已正确设定适当的权限，以便能够存取这些环境变数所参考的目录。
Ensure sure the environment variables TMP and TEMP are properly set, as well as the appropriate permissions in order to access the directories these environment variables refer to.
例如，如果项目是阵列变数，则程序程序码不会有变数本身的存取权，但它可存取阵列成员。
For example, if the element is an array variable, the procedure code does not have access to the variable itself, but it can access the array members.
例如，如果项目是阵列变数，则程序程序码不会有变数本身的存取权，但它可存取阵列成员。
For example, if the element is an array variable, the procedure code does not have access to the variable itself, but it can access the array members.
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