英文關鍵字
boy
casual
caucasian
class
classroom
college
communication
computer
desk
discussing
education
educational
excited
female
finger
friends
friendship
gesture
girl
group
hand
happy
hispanic
internet
laptop
latin
learn
lifestyle
male
men
online
people
point
room
school
screen
sitting
smile
student
study
studying
success
tablet
talking
teacher
team
teamwork
technology
university
women