機器
belt
blonde
caucasian
closeup
conservation
conveyor
divide
dump
ecofriendly
ecology
environment
environmental
equipment
fabric
factory
garbage
helmet
industrial
industry
junk
line
litter
machinery
material
plant
pollution
procedure
process
production
recycling
reprocess
resource
responsibility
rubbish
separate
sort
sustainable
tank
technology
tool
transport
trash
treatment
utilization
waste
woman
worker
workshop