英文關鍵字
abc
alphabet
american
and
asl
communicate
communication
concepts
dactylology
deaf
deafness
disability
disabled
dumb
ear
easy
education
english
finger
fingers
gesticulating
gestures
gesturing
hard
hearing
help
ideas
impairment
international
interpreter
language
learn
man
movement
mute
peace
real
showing
sign
signal
speech
speechless
spelling
symbol
symbolic
teach
teacher
time
visual