英文關鍵字
aerial
align
are
background
bag
birds
bottles
bulldozer
cities
city
concept
dirt
dirty
disposal
dump
dumping
ecology
environment
environmental
fly
flying
garbage
global
industrial
industry
junk
landfill
leveling
material
nature
open
photography
pile
piles
plastic
pollution
probl
problems
recycle
recycling
rubbish
scrap
smell
stink
toxic
trash
truck
urban
waste