英文關鍵字
adolescent
ballpoint
book
boy
boys
class
classmate
college
copybook
curve
educate
education
exam
fingers
guy
hands
holding
indoors
knowledge
learn
lesson
lifestyle
male
males
notebook
pen
person
pupil
pupils
room
school
schoolboy
schoolboys
schoolchild
schoolchildren
sitting
students
study
studying
teen
teenager
teenagers
thinking
two
writing
young