bigraded exact couple是什么意思，bigraded exact couple的翻译，bigraded exact couple音标、读音、用法和例句

Warning: file_put_contents(): Only 0 of 4762 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/5678977.com/index.php on line 55
bigraded exact couple是什么意思，bigraded exact couple的翻译，bigraded exact couple音标、读音、用法和例句_加林查网西语词典