Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/97aa922d016fe98c0f461f5887b50505.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 background (n.)是什么意思，background (n.)的翻译，background (n.)音标、读音、用法和例句_按摩法牛津词典