Sentence:  Travelers entering from the desert were confounded by what must have seemed an illusion : a great garden filled with nightingales and roses , cut by canals and terraced promenades , studded with water tanks of turquoise tile in which were <WSD>reflected</WSD> the glistening blue curves of a hundred domes . 
Meaning of the word marked with <WSD> tags:  to throw or bend back (from a surface)