video1.0How stairs are cleaned at a Metro Stationbspcnhttps://odysee.com/@bspcn:9Odyseehttps://odysee.comhttps://thumbnails.odycdn.com/card/s:1280:720/quality:85/plain/https://thumbs.odycdn.com/2015287145eb4d6c7c6451389adbf92f.webp390220560315