1.

1. I heard someone fall down the stairway.
    我听到有人摔下楼梯。

1. 楼梯：stability testes 稳定性检测 | stairway楼梯 | staking 定桩

2. 阶梯：stairwall 楼梯段墙 | stairway 阶梯 | stall urinal 壁上小便器

3. 楼梯间：stair landing platform 楼梯平台 | stairway 楼梯间 | stake 标杆

4. 楼道,楼梯：聋的 deaf | 楼道,楼梯 stairway | 陆地,大地;地球 earth

1. (室内外的)楼梯，台阶
    A stairway is a staircase or a flight of steps, inside or outside a building.

1. a way of access (upward and downward) consisting of a set of steps

    Synonym: staircase