機器
environmental
belt
character
clean
container
conveyor
disposable
disposal
eco
ecological
ecology
environment
facility
factory
flat
garbage
heap
illustration
industrial
industry
junk
litter
manufacturing
material
modern
packaging
plant
pollution
process
processing
product
production
recycle
recycled
recycling
resource
reuse
rubbish
separate
separating
separation
sorting
storage
sustainable
technology
trash
treatment
waste