機器
barcelona
brush
building
business
car
city
clean
cleaning
cleanliness
dust
ecological
ecology
equipment
europa
europe
horizontal
hygiene
industrial
industry
life
machinery
mechanic
mechanism
mechanization
metal
mobile
modernization
movement
objets
process
progress
roadway
rubber
scene
shop
sidewalk
spain
street
sweeping
sweeps
techniques
technology
tourism
tyre
urban
washes
waste
wheel
work