大量有趣的调用通过安全管理器传递。
Lots of interesting calls pass through the security manager.
浏览器通过调用预先注册的函数来传递事件。
Browsers pass events by calling functions that were registered in advance.
签名的基本处理是通过直接传递给恰当的访问器方法的值自动实现的。
The basic handling of signatures is automatic, using values passed directly to the appropriate visitor methods.
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