英文關鍵字
asphalt
avenue
belarus
brush
car
city
clean
cleaner
cleanliness
cleanup
dirty
drive
dust
effective
environment
equipment
garbage
highway
machine
minsk
moscow
motion
municipal
nature
outdoor
parade
recycling
regular
road
round
rubbish
russia
sanitary
service
show
street
sweeper
sweeping
tractor
traffic
truck
urban
vehicle
wash
water
wet
work
worker