Warning: file_put_contents(): Only 0 of 4920 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/28094.com/index.php on line 55 boneblack英英字典_boneblack剑桥英语解释_boneblack柯林斯英文解释_贰靶汉英词典
1. N a black residue from the destructive distillation of bones, containing about 10 per cent carbon and 80 per cent calcium phosphate, used as a decolorizing agent and pigment (骨头分解蒸馏后得到的)骨黑