ACL绑定级别定义了在运行时对哪些内容应用acl，这些绑定都是在创建项目类型时定义的。

ACL binding level defines where to pick the ACL from at runtime. These are defined while creating the item type.

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Max的研究目标是为新类型的应用和架构定义一个安全模型。

The goal of his research is to define a security model for these new types of applications and architectures.

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这个枚举定义了注释类型可应用的不同程序元素。

This enum defines the various program elements that an annotation type can target. Listing 9 show the ElementType enum in its entirety.

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