Riser
n. 起床者, 叛徒, 起义者, 竖板\\n[化] 上升管
📖 牛津释义
riser
n
1 vertical piece between two treads of a staircase 梯级竖板.
2 person who habitually gets up early or late in the morning (as specified) 惯於早起或晚起的人
an early/a late riser 早起[晚起]的人.
🗣️ 情景例句
Keep it. I'm buying tonight.
收着吧，今晚我付钱。
Courtesy costs nothing.
谦虚恭敬，不用分文。
The pictures are on the wall.
画挂在墙上。