機器
environmental
auto
bucket
business
cargo
cleaner
cleaning
conservation
consumption
deliverance
dump
earth day
eco
ecology
equipment
extrusion
facility
factory
garbage
industrial
industry
laborer
labour
machinery
male
man
manufacture
manufacturing
menial
packaging
pile
plant
pollution
processing
professional
recycled
recycling
renewal
resources
rotten
scavenger
sorted
sorting
technology
trash
unloading
waste
worker
working