英文關鍵字
black
blackboard
board
chalk
chalkboard
class
classroom
college
concept
course
desk
draw
drawing
educate
education
font
graduate
greenboard
hand
handwriting
handwritten
high
intermediate
junior
knowledge
learn
learning
lecture
lesson
letter
lettering
middle
nobody
school
secondary
sketch
studies
study
studying
table
teach
teaching
technical
text
training
understand
white
word
write
writing