One dictionary says:
court·yard
(kôrt′yärd′)
n.
An open space surrounded by walls or buildings, adjoining or within a building such as a large house or housing complex.
Looked the Courtyard images at https://www.google.com/search?q=courtyard&biw=1280&bih=878&source=lnms&tbm=isch&sa=X&ei=tAVaVaf2NIzdoASq54DQAg&ved=0CAcQ_AUoAg&dpr=1 all of the courtyard shows the building around.
在庭院中, 庭与院分不开的。 这使得“帘幕无重数”是深深庭院的自然引申。