英文關鍵字
academic
adult
attractive
beautiful
business
casual
caucasian
cheerful
class
classmates
classroom
college
communication
conversation
day
desk
education
european
gathering
girls
group
guy
hair
indoors
knowledge
learning
lecture
lesson
listening
looking
man
meeting
office
people
planning
process
relations
research
sitting
smiling
students
studying
table
talking
team
together
university
woman
work