staircase
US
UK staircase n: (stairs, steps) (建筑)
SC 楼梯，阶梯 lóu tī，jiē tī
TC 樓梯，階梯
TC 樓梯，階梯
Entering the hall, Imogen saw in front of her a staircase leading to the first floor.
spiral staircase n: (stairs that wind round)
SC 螺旋梯 luó xuán tī
SC 旋转楼梯 luó xuán tī，xuán zhuǎn lóu tī
She climbed the spiral staircase to the top of the tower.
winding staircase n: (long set of spiral stairs)
SC 螺旋楼梯 luó xuán lóu tī
TC 螺旋樓梯
TC 螺旋樓梯
The character breaks both his legs when he falls from the top of the winding staircase.