英文關鍵字
background
black
brunette
buttons
chatting
class
classroom
closeup
concept
desk
doing
education
female
fingers
girl
hand
hands
hold
holding
homework
jacket
knowledges
learn
learner
learning
lessons
lifestyle
mobile
modern
person
school
schoolgirl
science
scientist
sitting
smart
smartphone
student
study
studying
teach
teen
touching
typing
university
unknown
work
young