英文關鍵字
adult
book
caucasian
college
copybook
education
exercise
exercisebook
girl
grass
learn
lie
mat
nature
outdoor
park
people
school
student
study
task
textbook
tree
university
woman
write
young
英文關鍵字
adult
book
caucasian
college
copybook
education
exercise
exercisebook
girl
grass
learn
lie
mat
nature
outdoor
park
people
school
student
study
task
textbook
tree
university
woman
write
young