英文關鍵字
info
information
faq
help
letter
text
word
education
symbol
blackboard
sign
graphic
illustration
support
concept
inform
helpdesk
communication
question
service
communicate
ask
knowledge
data
line
outline
informative
know
message
chalkboard
green
chalk
board
table
nobody
school
classroom
class
white
learning
learn
lettering
study
draw
hand
drawing
educate
sketch
studying
write