英文關鍵字
abstract
background
black
cellophane
city
clean
closeup
consumption
dark
design
dirt
dirty
dry
dump
earth
environment
environmental
forest
garbage
gray
green
grunge
industry
junk
litter
littering
material
napkin
natural
nature
old
paper
pattern
pollution
recycle
rough
rubbish
stone
surface
texture
textured
trash
tree
urban
wall
wallpaper
waste
white