英文關鍵字
bag
blowing
cellulose
clean
concept
contamination
cup
damage
destruction
discard
earth
eco
ecology
emotions
environment
environmental
field
forest
future
garbage
global
globalization
grass
hand
human
impact
irresponsible
land
litter
package
paper
person
picnic
planet
pollution
problem
recycle
responsibility
rubbish
save
singleusing
stop
throwing
toxic
tree
used
view
waste
wind
world