Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/10e1663fde7c1abbf8e47665b4d5e80a.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 mandatory (adj.)是什么意思，mandatory (adj.)的翻译，mandatory (adj.)音标、读音、用法和例句_沉淀汉英词典