Riser
01
踢脚板, 楼梯踏步的垂直部分
the vertical component of a step in a staircase, providing the height between consecutive treads
02
垂直管道, 立管
a vertical pipe in a building
03
起床的人, 早起者
a person who rises (especially from bed)
踢脚板, 楼梯踏步的垂直部分
垂直管道, 立管
起床的人, 早起者