名詞 backstairs:

1. a second staircase at the rear of a building

形容詞 backstairs:

1. secret and sly or sordid
   同義詞：backstair, furtive

1. He has got the post, but he got it by backstairs influence.
   他得到了那個(gè)職位，但他是用不正當(dāng)?shù)氖侄蔚玫降摹?/div>

back.stairs

adj.（形容詞）
Furtively carried on; clandestine:
秘密的，不正當(dāng)?shù)模和低得M(jìn)行的；秘密的：
例句：
backstairs gossip.
暗中的流言