单词manual alphabet
un.: 手指字母
网络: 手语字母；手势法；字母的手势
手指字母
As the child could neither see nor hear, she had to use manual alphabet.
因为这个孩子看不到也听不到，她必须使用手语字母。
Since Helen was deaf and blind, she learned to communicate via a manual alphabet.
自从Helen不幸地失明和失聪后，她学会了用手语字母表交流。
She used a manual alphabet by which she spelled out words on Helen"s hand.
她用一套手做的字母把单词拼到海伦的手上。