英文關鍵字
1080p
adult
advertising
alpha
animation
announce
background
billboard
black
business
businessman
character
chart
concept
easel
educate
education
emphasis
emphasize
fix
flip
flipchart
frame
gesture
gesturing
hand
holding
isolated
learn
lecture
lesson
looking
model
object
office
open
presentation
presenting
product
seminar
show
slide
stand
studio
subject
success
suit
training
whiteboard