英文關鍵字
black
book
bookcase
bookshelf
boy
caucasian
child
childhood
concentration
cute
day
decide
development
education
educational
elementary
fulfill
happy
indoor
information
intelligence
kid
knowledge
learn
learning
lessons
library
literature
looking
male
notebook
one
person
read
reading
research
school
schoolboy
seek
shelf
smart
stack
student
study
studying
task
textbook
think
young
youth