backroom

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释义
adj.幕后的
refer to people in an organization who do important work but are not seen or known about by the public.

例句
Zoe：I'll go underground,backrooms, the urinals!(House of Cards)
佐伊：我去挖掘背后的秘密，幕后消息，甚至连尿桶都得挖。（纸牌屋）