bridgeboard
音标['bridʒbɒ:d]
汉语翻译
n. 木楼梯之侧板
详细解释
bridge.board
n.（名词）A notched board at either side of a staircase that supports the treads and risers.木楼梯侧板，木楼梯小梁：在阶梯两边支撑楼梯的踏板和竖板的有凹口的木板
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