When something is backdoor, it is secret, or you are not saying out loud that this is what you meant to do.

When something is backdoor當某件事是backdoor的時候， it is secret就代表是暗中進行的， or you are not saying out loud that this is what you meant to do或者你沒有把真正的用意講出來。

A backdoor deal is one people make quietly, off to the side. A backdoor way into a job or a school is a way that is not the open, official one.

A backdoor dealbackdoor deal（私下的交易）， is one people make quietly, off to the side是人們私底下偷偷談成的。A backdoor way into a job or a school進入一份工作或一間學校的backdoor way（後門管道）， is a way that is not the open, official one指的就是不是公開、正式的那種途徑。

The picture comes from a real back door: you slip in where fewer people are watching.

The picture comes from a real back door這個說法的畫面來自真正的後門： you slip in where fewer people are watching你從比較少人注意的地方溜進去。

Though actually the same word is also the physical door at the back of a building, and computer people use a backdoor for a hidden way into a system — same picture, different room.

Though actually不過其實， the same word is also the physical door at the back of a building同一個字也可以指建築物後面真正的那扇門， and computer people use a backdoor for a hidden way into a system電腦領域的人也會用backdoor指系統裡一個隱藏的入侵管道—— same picture, different room同樣的畫面，只是換了個場景。

In this use it often sits in front of a noun: a backdoor agreement, backdoor methods. It can sound critical, as if someone is avoiding the fair route.

In this use在這個用法裡， it often sits in front of a noun它常常放在名詞前面： a backdoor agreement, backdoor methods像backdoor agreement（暗中達成的協議）、backdoor methods（暗中的手法）。It can sound critical這個字聽起來可能帶點批評的意味， as if someone is avoiding the fair route彷彿在說某人在躲避正當的管道。