Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/df7b442a889848822f7b108d2185b28e.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 sequential focusing是什么意思，sequential focusing的翻译，sequential focusing音标、读音、用法和例句_沉淀汉英词典