Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/4d93a0bce046536dc4262a767899964a.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 family of confocal parabolas是什么意思，family of confocal parabolas的翻译，family of confocal parabolas音标、读音、用法和例句_沉淀汉英词典