Warning: file_put_contents(): Only 0 of 6223 bytes written, possibly out of free disk space in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 coal gas英英字典_coal gas剑桥英语解释_coal gas柯林斯英文解释_94生活常识网有道词典
1. N a mixture of gases produced by the distillation of bituminous coal and used for heating and lighting: consists mainly of hydrogen, methane, and carbon monoxide 煤氣