英文關鍵字
area
autumn
blow
blower
blowing
body
city
clean
cleaner
cleaning
cleanup
debris
dust
environment
equipment
fall
fallen
fol
foliage
garden
gardener
gardening
grass
green
heavy
industrial
industry
job
junk
labor
lawn
leaf
leaves
loader
loading
machine
maintenance
man
municipal
nature
outdoor
park
people
professional
recreation
removing
rubbish
season
seasonal
service
services
street
tool
town
tree
truck
vaccuum
vacuum
walkway
work
worker