英文關鍵字
adult
bottle
bottles
box
cans
car
clean
dirt
dirty
discarded
dump
eco
ecological
ecology
environmental
fast
forest
garbage
green
guy
junk
landscape
life
litter
littering
man
nature
neglectfulperson
package
park
person
picnic
plastic
pollute
polluting
pollution
problem
problems
product
recycling
road
rubbish
throw
tourist
trash
trunk
waste
wood