英文關鍵字
1080p
20s
academic
adult
attentively
books
campus
caucasian
college
computer
concentrated
concentrating
definition
education
electronic
focused
hd
high
highdef
higher
keyboard
knowledge
library
male
man
monitor
mouse
one
pc
person
school
screen
serious
student
table
technology
thoughtful
typing
university
using
young