Warning: file_put_contents(): Only 0 of 5610 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/73904.com/index.php on line 55 trimmer英英字典_trimmer剑桥英语解释_trimmer柯林斯英文解释_骑士汉英词典
1. N a beam in a floor or roof structure attached to truncated joists in order to leave an opening for a staircase, chimney, etc 托梁 (Also called trimmer joist)