英文關鍵字
compacting
construction
contracting
control
dirt
dust
environment
equipment
excavation
excavator
fresh
green
ground
industrial
industry
land
landscape
machine
mine
mining
nature
new
open
outdoor
outside
park
plant
preparation
project
public
road
service
site
soil
spraying
sprinkler
surface
tank
tanker
transportation
tree
truck
trucks
vehicle
water
watering
wet
wetting
work
working