Warning: file_put_contents(/www/wwwroot/ppbbu/73904.com/cache/993c3aed52f135856870d5adcfdb9068.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/73904.com/index.php on line 55 front extreme position是什么意思，front extreme position的翻译，front extreme position音标、读音、用法和例句_骑士汉英词典
A cardinal vowel is a vowel sound produced when the tongue is in an extreme position, either front or back, high or low. 儅舌頭位於極耑的位置，發出的元音就是定位元音，不論位置的前後或高低。