back door
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杜绝走后门
stop ‘backdoorism'
屋子的后门
back door of a house
前门拒虎，后门进狼
drive a tiger away from the front door only to have a wolf in at the back―fend off one danger only to fall a prey to another
从后门进去
enter by the back door
后门砰的一声关上了。
The back door closed with a slam.
银行后门被强行打开。
The back door of the bank was forced.
我们悄悄地从后门溜了出去。
We slipped out by a back door.
眨眼间她已出了后门。
She was out of the back door in a flash.
那条狗哀叫着并嚓嚓地扒着后门。
The dog whined and scratched at the back door.
后门
后门是一种网络病毒。该病毒文件运行后会将创建自身副本到用户系统%SYSTEM%目录下，副本文件名为BRC_SERVER.EXE；病毒将启进程实现对用户系统的远程控制；并在注册表中添加如下项来实现开机自启动。
绕过安全性控制而获取对程序或系统访问权的方法。
