英文關鍵字
1080p
20s
academic
adult
break
campus
caucasian
cheerful
college
computer
definition
desk
digital
education
happy
hd
high
highdef
higher
knowledge
male
man
one
pc
person
portrait
research
revising
school
scrolling
sitting
smiling
student
studying
tablet
touching
touchscreen
university
using
young