Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/bb6f2566d0f28f76681901707ba15ace.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 foci of a hyperbola是什么意思,foci of a hyperbola的翻译,foci of a hyperbola音标、读音、用法和例句_沉淀汉英词典