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单词 room-and-pillar
释义

room-and-pillar

[ room-uhn-pil-er, room- ]
/ ˈrum ənˈpɪl ər, ˈrʊm- /

adjective Mining.

noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them; pillar-and-breast.
Compare longwall.

Words nearby room-and-pillar

rookery, rookie, rooky, room, room and board, room-and-pillar, room clerk, room divider, roomer, roomette, room father
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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更新时间:2024/12/25 1:31:31