機器
belt
carry
collection
conservation
conveyor
disposal
divide
dump
ecofriendly
ecology
environment
environmental
equipment
fabric
facility
factory
filter
garbage
industrial
industry
junk
litter
machinery
material
plant
pollution
procedure
process
production
recycling
resource
responsibility
reuse
rubbish
safety
separate
sort
sustainable
system
tank
technology
tool
transport
trash
treatment
waste