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英文關鍵字
group
white
blue
background
horizontal
paper
person
people
autumn
child
time
open
motion
blank
message
text
school
writing
cover
information
book
learning
education
studying
hardcover
literature
textbook
page
study
college
student
video
slow
animation
hd
workbook
Loop
lapse
timelapse
intro
1080p
1920x1080