Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/9ebde8ff5f8ade6822c21d5e232a65a0.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 birational equivalent是什么意思，birational equivalent的翻译，birational equivalent音标、读音、用法和例句_按摩法牛津词典