用隐蔽或不正当的方法，走后门
6. by the back door什么意思
ph.
1. They did it by the back door.他们靠走后门干的。
2. by the back door的解释
1. 通过后门;用不正当的途径：By leaps and bounds 飞跃地 | By the back door 通过后门;用不正当的途径 | By the book 按常规
2. 通过后门;用不正当的途：14.turn one's back on/upon...背弃...,抛弃...;对...不闻不问 | 15. by the back door 通过后门;用不正当的途 | 16. bring home the bacon 养家糊口;成功,取胜
