| 词汇 | girder | 
| 释义 | girder  noun [ C ] uk/ˈɡɜː.dər/ us/ˈɡɝː.dɚ/  大梁;桁 a long, thick piece of metal or concrete, etc. that supports a roof, floor, bridge, or other large structure  steel roof girders 钢制屋梁  | 
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