英文關鍵字
bottle
bottles
business
center
contamination
conversion
conveyor
dirt
dirty
disposal
dreadlocks
dump
ecological
ecology
environment
environmental
factory
garbage
green
heap
industrial
industry
jacket
land
landfill
line
litter
material
nature
organic
plant
plastic
pollution
processing
recast
recycle
recycled
recycling
rubbish
scrapyard
sorting
trash
used
volunteer
waste
woman
work
worker
yellow