英文關鍵字
action
bag
care
clean
concept
continent
damage
danger
day
destruction
dues
earth
ecological
ecology
ecosystem
environment
environmental
garbage
global
globe
human
industrial
map
nature
ocean
packaging
planet
plastic
pollution
polyethylene
problem
protect
protection
recycle
responsibility
restriction
rubbish
save
sphere
toxic
transparent
trash
waste
world