1.Anybody who compiles a dictionary has to know his alphabet backwards.
无论谁编典都得把母表记得熟透。
2.Delta is the fourth letter of the Greek alphabet.
δ是希腊母中的第四个母。
3.A precedes B in the alphabet.
母表上A在B的前面。
4."dactylology :The use of the fingers and hands to communicate and convey ideas, as in the manual alphabet used by hearing-impaired and speech-impaired people."
典都得把
母;
语
丁
正。
和手来交流和表达思想,如听说有障碍的人所用的手势语
