機器
environmental
automobile
bin
business
car
cargo
city
clean
collection
container
day
dirty
disposal
dispose
dump
dustcart
engine
environment
equipment
garbage
garbage truck
industrial
industry
junk
metal
pickup
public
recycle
recycling
refuse
road
rubbish
sanitation
scrap
service
street
transport
transportation
trash
truck
urban
used
utility
vehicle
waste
wheel
white
work
worker