实际上，帐号、密码和权限只能在遵守固定规则的操作系统环境中保护您的数据。
The fact is accounts, passwords, and permissions can only protect your data in the context of an operating system that obeys stated rules.
ACL策略是一组规则(权限)，用于指定在资源上执行特定操作所需的条件。
An ACL policy is the set of rules (permissions) that specifies the conditions required to perform certain operations on that resource.
应用程序使用的规则可由具备适当权限的任何用户更改，而不必更改甚至重新编译应用程序。
The rules used by an application can be changed by anyone with permission, without changing or even recompiling the application.
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