backstairs influence暗中势力
Backstairs Passage巴克斯泰斯海峡
Creepin Up The Backstairs上一首
"backstairs gossip"; " his low backstairs cunning"; " backstairs intimacies"
同义词：backstairfurtive
N-PLURAL（复数型名词） a secondary staircase in a house, esp one originally for the use of servants 尤指供仆人用的楼梯
ADJ（形容词） underhand 背地里的
backstairs gossip