suggest you go find that button on any escalator in malls

来源: internuts 于 2025-09-25 06:40:21 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (351 bytes)
本帖于 2025-09-25 07:08:06 时间, 由普通用户 internuts 编辑

hint:  an escalator is a moving staircase designed for a continuous flow of people on a fixed incline.  there are stop buttons on it primarily for maintenance but hidden from easy public acccess so to prevent it from unintended sudden stops.

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