Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e370d49a64c872f82d145b3c1df67206.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 poor frequency law是什么意思，poor frequency law的翻译，poor frequency law音标、读音、用法和例句_沉淀汉英词典