機器
asphalt
baste
brush
car
city
cleaned
cleaner
cleaning
collector
dirt
dirty
driving
dry
dust
dusting
engineering
equipment
garbage
highway
mechanism
motion
on
orange
outdoor
refuse
revolve
road
rotate
rubbish
special
street
sweep
sweeper
sweeping
sweepings
tack
technics
technique
truck
turn
turning
urban
wheel