英文關鍵字
africa
african
beautiful
black
boy
boys
child
childhood
children
cholera
clean
cleaning
close
culture
disease
drink
drinking
education
fashion
fun
funny
girl
girls
hiv
ill
illness
justice
modern
one
people
person
portrait
rights
school
smile
smiling
soap
soapy
social
student
symbol
two
unhygienic
wash
washing
water
woman
young