英文關鍵字
background
blank
board
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communicating
communication
communications
concept
directing
direction
directions
education
empty
female
finger
fingers
forefinger
gesticulating
gesture
gestures
guidance
guiding
hand
hands
idea
ideas
index
indexfinger
information
learn
learning
paper
person
plan
planning
point
pointing
presentation
presenting
reading
show
showing
sign
signal
signals
signs
statement
white
whiteboard
woman