For example, a helpdesk agent updating tickets entered in the system has access only to the fixed set of options. The list is set and provides no means of freeform entry.
比如，一个进入该系统的helpdesk代理更新许可仅仅能访问固定的选项集。
More than forgetting, perhaps what he fears is that he will be denied access-that the little box will one day recognize him behind his thick and convincing beard, will decide he has no right of entry.
比起忘记密码，他更害怕的也许是哪天就不让他进了——这小信箱总有一天会透过他那茂密的令人信服的胡须认出他来，宣布他无权进入。
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