Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/9f43d31d3feb77fa93d1bde90a36dff8.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 learn sth by heart是什么意思，learn sth by heart的翻译，learn sth by heart音标、读音、用法和例句_绍翊字体网有道词典