riser
US
UK riser n: usually plural (step-like platform) (常作risers)
SC 梯级竖板，楼梯踢板，（每级楼梯的）竖板 tī jí shù bǎn，lóu tī tī bǎn，měi jí lóu tī de shù bǎn
The choir stood on risers behind the orchestra.
riser n: (vertical part of step) (楼梯或台阶的竖直部分)
SC 立板，竖版
Our staircase has varnished wood treads and cream painted risers.
riser n: (person who gets out of bed)
SC 起床者 qǐ chuáng zhě
My husband is a cranky riser, so I don't bother him until lunchtime.
riser n: (metallurgy: mold) (冶金学)
SC 冒口
The chemist poured the metal into the riser.
early riser n: (person who gets up early)
SC 早起者 zǎo qǐ zhě
SC 起床早的人 zǎo qǐ zhě，qǐ chuáng zǎo de rén
Maybe he was always such an early riser because he grew up on a farm.
late riser n: (person who gets up late)
SC 起床晚的人，晚起的人