英文關鍵字
backpack
bag
book
boy
building
caucasian
classmate
college
completion
conversation
couple
dialogue
discussion
education
energetic
friends
friendship
girl
gladness
go
joy
learning
lyceum
outdoors
outside
part
people
person
school
schoolboy
schoolgirl
schoolyard
space
speaking
students
teen
teenager
teener
textbook
time
together
two
uniform