英文關鍵字
school
student
new
normal
mask
coronavirus
covid19
girl
hygiene
medical
pandemic
protection
teenage
wearing
air
asian
back
backpack
bag
book
care
carry
carrying
clean
disease
education
face
female
flu
go
health
hold
holding
infection
influenza
literature
one
people
person
post
prevention
ready
return
safety
stand
standing
teen
virus
woman
young