英文關鍵字
abundance
air
birds
bulldozer
caterpillar
collect
compactor
consumerism
consumption
crushed
debris
destroy
dirt
dirty
disposal
dump
ecological
ecology
environment
frame
full
garbage
horizontal
household
industry
landfill
landfills
mass
methane
nobody
piled
plastic
pollution
protection
reduce
refuse
rubbish
sanitary
site
smashed
trash
treatment
truck
up
waste
wasteful
working
yard