Done without official permission from the person or organisation who has the power to give it. The word points at a rule, not just at a wish — someone in charge would have had to say yes, and did not.

without未經 the person or organisation who has the power to give it有權給予這許可的人或機構的 official permission正式許可 Done就做的。The word這個詞 points at指向的是 a rule規定，not just at a wish不只是願望——someone in charge主管的人 would have had to say yes原本得說「可以」，and did not但沒有。

It attaches to actions and to people: 'unauthorized access' to a computer system, an 'unauthorized absence' from work, 'no unauthorized persons beyond this point'. You meet it constantly on signs, in contracts, in company rules, and in software error messages, which is where most students first see it. Because it belongs to the language of rules, it sounds cold and official; a friend would never use it about your behaviour.

It它 attaches to actions and to people可以用在動作和人身上，像是 a computer system電腦系統的 'unauthorized access'「未經授權存取」、from work上班的 an 'unauthorized absence'「未經授權缺勤」、'no unauthorized persons beyond this point'「此處禁止非相關人員進入」。You你 on signs在告示牌、in contracts合約、in company rules公司規定、and in software error messages還有軟體錯誤訊息裡 meet it constantly常常會看到它，which is where most students first see it這也是大多數學生第一次看到它的地方。Because it belongs to the language of rules因為它屬於規定的用語，it sounds cold and official聽起來冷冰冰又官方；a friend一個朋友 would never use it about your behaviour是不會用這詞來說你的行為的。

There is also a softer publishing use: an 'unauthorized biography' is a life story written without the subject's cooperation or approval — perfectly legal, just not blessed by them.

There is also a softer publishing use在出版界也有一個比較沒那麼嚴肅的用法：an 'unauthorized biography'「unauthorized biography」是指 written without the subject's cooperation or approval沒有經過當事人同意或合作 is a life story就寫成的傳記——perfectly legal完全合法，just not blessed by them只是沒有得到他們的祝福而已。

British English usually spells it 'unauthorised', American English 'unauthorized'; both are correct, just pick one and stay with it.

British English英式英文 usually spells it通常拼作 'unauthorised'「unauthorised」，American English美式英文 spells it則拼作 'unauthorized'「unauthorized」；both are correct兩種拼法都對，just pick one and stay with it選一種固定用就好。