Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/5323bc4065b249f76a24590017845501.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 concave mirror reflector是什么意思，concave mirror reflector的翻译，concave mirror reflector音标、读音、用法和例句_沉淀汉英词典