英文關鍵字
africa
african
bacteria
bamako
black
boy
boys
change
child
childhood
children
clean
cleaning
climate
countries
developing
drink
drinking
face
girl
girls
global
globe
guy
handsome
hygiene
ill
illness
kid
kids
mali
outdoors
people
person
portrait
problem
south
sudan
symbol
thirst
thirsty
two
unhygienic
warming
wash
washing
water
young