bleacher

详细解释:n. 漂白业者, 漂白剂, 露天看台
【化】 漂白机; 纸浆漂白机
【医】 漂白器

英语解释：

名词 bleacher:

a worker who bleaches (cloth or flour etc.)

详细解释：

bleach.er

n.（名词）
One that bleaches or is used in bleaching.
漂白工人或漂白剂
Often bleachers An often unroofed outdoor grandstand for seating spectators.
常作 bleachers 露天看台：一种常为无顶的露天观众大看台

来源：
[Sense 2, from comparing a person`s exposure to the sun when sitting on them with the exposure of linens bleaching on a clothesline]
[释义二，由坐在大看台而暴露在太阳下比作晒衣绳上被晒白的亚麻布而来]