Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/2ba35fcaf37982c9781cb4321fb1c416.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 backbone (n.)是什么意思，backbone (n.)的翻译，backbone (n.)音标、读音、用法和例句_沉淀汉英词典