adj.密室中的；后房的；幕后的
n.后房；密室
The surgeon's success depended on the boys in the backroom who had invented the new heart machine. 这位外科医生的成功全靠那些发明新型心脏机器的默默无闻的实干家。
In the backroom study stood two desks side by side. 在里屋书房里，有两张桌子并排放着。
