1. You dialed an invalid or unauthorized number. Please check the number and dial again. 您拨打的号码无效或没有权限。请检查号码，然后重新拨打。
2. Over the years the hollywood sign has endured numerous alterations most of them unauthorized. 好莱坞标志多年来承受了无数变更——大多数是未经许可的。
3. Help him gather the information he needs to complete his report and avoid coworkers who want to make unauthorized changes. 帮助他收集他所需要的资料，以完成他的报告，并避免同事谁不想使未经授权的更改。
英英解释
adj.
1. not endowed with authority
2. without official authorization
