英文關鍵字
1080p
20s
300fps
adult
caucasian
chair
college
concentrated
concentrating
corporate
definition
desk
discuss
female
filming
focused
hd
high
highdef
highspeed
homework
information
internet
knowledge
learn
learning
mixedrace
motion
office
people
research
revision
school
sitting
slow
slowmotion
student
study
studying
swivel
tablet
talk
talking
touchscreen
two
ultra
university
using
woman
work
workplace
young
home
schooling
stay
social
distancing
quarantine
self
isolation
real
pandemic
distance
lock
down
coronavirus
covid19
covid