noun · a power-driven set of stairs that move up or down

商场里的扶梯正在维修，请暂时改用楼梯。

noun · a structure with steps or rungs for climbing, often fixed or with side rails

他架起扶梯，爬上屋顶去修理瓦片。

noun · a flight of stairs, typically one equipped with handrails

他扶着木扶梯慢慢走上了二楼。