英文關鍵字
background
black
brunette
buttons
chalkboard
chatting
classroom
closeup
concept
design
doing
education
exam
female
fingers
girl
hand
hands
high
higher
hold
holding
homework
jacket
knowledges
learn
learner
lessons
lifestyle
mobile
modern
person
school
schoolgirl
science
scientist
sitting
smart
smartphone
student
study
studying
suit
teach
touching
typing
university
unknown