機器
environmental
auto
automobile
back
bin
car
city
clean
cleaning
collection
container
crush
day
destroyed
dirty
disposal
dispose
dump
environment
equipment
garbage
garbage truck
green
industrial
industry
junk
material
package
recycle
recycling
refuse
road
rubbish
sanitation
scrap
service
smelly
street
transport
transportation
trash
truck
urban
used
vehicle
waste