英文關鍵字
african
afro
american
beautiful
black
break
caucasian
college
communication
concept
discussing
education
group
hall
happy
high
hispanic
indoors
international
latin
learn
learning
lecture
man
many
meeting
multiethnic
multiracial
people
person
school
sitting
smiling
student
study
studying
talking
team
teen
teenage
teenager
university
woman
writing
young