The scope of the relationships in a given instance of one of the inner classes is a single ACL.

这些内部类之一的给定实例中的关系的范围是单个acl。

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Inner classes can refer to mutable instance fields if the inner-class expression occurs in an instance context, but this is not the same thing.

如果内部类表达式出现在某个实例上下文中的话，内部类可以引用可变的实例域instance field，但这不是同一回事。

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Referring to enclosing type parameters inside static methods and static inner classes is prohibited outright by the compiler. So, for instance, the following code is illegal in tiger.

编译器完全禁止在静态方法和静态内部类中引用封闭类型参数。

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