sitting room的复数形式怎么写？

Her hand was just visible by the light from the sitting room.借着起居室的灯光，勉强能看见她的手。He crossed to the window of the sitting-room and parted the curtains.他走到客厅窗户边，拉开了窗帘。Tiffany revamped her sitting room with simple decorative ...

sitting room的音标：sitting room的英式发音音标为：['sitiŋ ru:m]sitting room的美式发音音标为：['sɪtɪŋ rum]...

n.起居室，客厅...