英文關鍵字
20s
academic
adult
beard
black
bookcase
books
bookshelf
casual
caucasian
closeup
college
curly
education
hair
handsome
homework
indoors
information
intelligence
knowledge
learn
library
literature
looking
male
man
options
public
racks
reader
research
rows
school
searching
selecting
shelf
shelves
student
study
studying
textbooks
university
unshaven
young