| 释义 | 
		girder美 ['ɡɜrdər]  英 ['ɡɜː(r)də(r)]  n. beam,joist,bar,rafter,crossbeam 1.  | (桥或建筑物的)梁,主梁,桁架a long strong iron or steel bar used for building bridges and the framework of large buildings  |  
 n.  | 1. a large strong beam, often of steel, forming a main spanning and supporting part in a framework 2. a very large metal bar used for making the frame of a building, bridge, or other large structure  |  
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