英文關鍵字
backpack
boy
break
caucasian
child
childhood
corona
coronavirus
covid19
curly
education
epidemic
face
flu
grass
green
homework
isolation
kid
lesson
little
male
man
mask
medical
one
outdoor
pandemic
people
portrait
protect
protection
quarantine
rest
school
smile
student
study
summer
teenager
vacation
virus
young