英文關鍵字
advise
blackboard
board
business
businessman
chalk
chalkboard
concept
development
education
goal
hand
handwriting
handwritten
idea
innovation
lesson
male
man
marketing
object
objective
procedure
program
purpose
sale
scratched
solutions
strategy
success
teacher
text
underlined
underlining
underscore
value
vision
white
with
word
writing
written