missing person

Their teenage daughter has been officially listed as a missing person since she failed to return home after leaving school.由于放学后未能回家，他们十几岁的女儿已被正式列入失踪人员名单。

They've filed a missing person report with the police. [=a document that officially reports that someone is missing]他们已向警方提交了一份失踪人员报告。