Back door
01
后门, 后门
a door that is located behind or at the side of a building
语法信息
有生性状态
无生命
形态构成
复合词
可数
singular
not gender specific
复数形式
back doors
例子
The delivery person knocked on the back door, carrying packages for the kitchen staff.
送货员敲了敲后门，为厨房工作人员送包裹。
02
后门, 秘密入口
a secret or underhand means of access (to a place or a position)
03
后门, 隐藏访问
an undocumented way to get access to a computer system or the data it contains
