英文關鍵字
action
bag
blue
care
clean
concept
continent
countries
cyrillic
damage
danger
destruction
earth
ecological
ecology
ecosystem
environment
environmental
garbage
global
globe
map
nature
ocean
outdoors
packaging
planet
plastic
pollution
polyethylene
problem
protect
protection
responsibility
restriction
save
sphere
symbol
toxic
transparent
trash
waste
wooden
world