Warning: file_put_contents(): Only 0 of 5099 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/52065.com/index.php on line 55 absolute ceiling英英字典_absolute ceiling剑桥英语解释_absolute ceiling柯林斯英文解释_伍贰汉英词典
1. N the maximum height above sea level, usually measured in feet or metres, at which an aircraft can maintain horizontal flight 绝对顶点→compareservice ceiling