英文關鍵字
animated
blackboard
board
chalk
chalkboard
class
course
desk
deutsch
different
draw
drawing
drawn
education
educational
english
font
french
german
germany
hand
handwriting
handwritten
knowledge
language
languages
learn
learning
lesson
letter
message
portugal
portuguese
school
sign
sketch
spanish
speak
studies
study
symbol
table
teach
teaching
text
type
university
white
wooden
word
write
writing