| 单词 | bridgeboard |
| 释义 | bridgeboard in British English (ˈbrɪdʒˌbɔːd) noun a board on both sides of a staircase that is cut to support the treads and risers Also called: cut stringbridgeboard in American English (ˈbrɪdʒˌbɔrd) noun any of the notched boards holding the treads and risers of a staircase; string |
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