那个盲人用手杖敲打人行道的地面.The blind man tapped the sidewalk with his cane.我们称这种新字母表为盲人用点字法.We will call this new alphabet'Braille '.盲人用竹竿点点探探,走得极缓慢.Blind bit of test the waters with a bamboo pole and going very slow....