英文關鍵字
adult
alone
attractive
bold
book
bookshelf
bookstore
casual
caucasian
cheerful
choice
college
day
education
hand
handsome
high
holding
human
indoor
interior
investigation
knowledge
learn
library
lifestyle
looking
male
man
old
one
person
portrait
professor
reader
reading
research
researching
retro
shelf
shelves
standing
student
study
teacher
time
tutor
university
vintage
working