它们是用来停止堆叠查核行程，并限制已拥有特定使用权限的呼叫端存取。
They are used to stop stack walks and limit the access of callers who have already been granted certain permissions.
堆叠查核行程要求呼叫堆叠中的所有程式码都必须具有存取受保护资源的使用权限。
The stack walk requires that all code in the call stack has permission to access a protected resource.
由于连结要求不会执行堆叠查核行程，因此堆叠查核行程修饰词对连结要求没有影响。
Because link demands do not perform a stack walk, the stack walk modifiers have no effect on link demands.
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