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   English
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bridgeboard ['brɪʤbɔ:d] n
gen. 木楼梯侧板〔小梁〕; 楼梯帮 (梁)
archit. 楼梯梁; 楼梯帮; 斜梁
 English thesaurus
BridgeBoard ['brɪʤbɔ:d] n
IT, abbr. BB (Amiga, Commodore)