機器
environmental
above
above view
activity
aerial
animal
collecting
dirty
disposal
dog
dug
dump
ecological
ecology
effect
engine
environment
exterior
garbage
industrial
industry
junk
landfill
litter
machinery
management
material
operator
outdoors
outside
people
pile
pollution
poor
poverty
recycling
refuse
rubbish
scavenger
scrap
sick
solid waste
thailand
transport
truck
waste
work
worker