现行的404处理程序允许我们为各种错误提供一些建议链接，比如说将用户指向站点目录。
Current 404 handlers allow you to provide a few suggested links for all errors, such as pointing the users to the site directory.
现行的无线频谱使用方法并没有提高竞争，也没有把利益传达给终端用户。
The existing wireless spectrum usage rules did not promote competition and failed to deliver benefits to end-users.
可现行法律对之无明确、具体、直接的规定，以至于难以很好地维护手机用户的利益。
However the present law can not stipulate it so definitely, specifically and directly that it is hard to keep the user's benefits well.
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