英文關鍵字
1080p
20s
300fps
adult
attentively
caucasian
chair
cheerful
college
concentrated
concentrating
corporate
definition
desk
explaining
female
filming
focused
friend
happy
hd
help
helpful
helping
high
highdef
highspeed
homework
information
internet
knowledge
laptop
mixedrace
motion
notebook
office
page
paper
people
pretty
research
revising
show
showing
shows
sitting
slow
slowmotion
smiling
student
study
studying
swivel
table
textbook
two
ultra
university
web
website
woman
work
workplace
writing
young
home
school
schooling
stay
social
distancing
quarantine
self
isolation
real
pandemic
distance
lock
down
coronavirus
covid19
covid