lowest observed frequency是什么意思，lowest observed frequency的翻译，lowest observed frequency音标、读音、用法和例句

Warning: file_put_contents(): Only 0 of 4836 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55
lowest observed frequency是什么意思，lowest observed frequency的翻译，lowest observed frequency音标、读音、用法和例句_淳朴汉英词典