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