英文關鍵字
backhoe
bucket
build
bulldozer
civil
construction
contractor
demolition
development
dig
digger
ditch
drainage
drill
earth
earthworks
engineering
equipment
excavating
excavation
excavator
ground
groundworks
heavy
hydraulic
industrial
industry
loader
machine
machinery
mine
mining
moving
open
pit
preparation
quarry
rock
sand
sewage
shovel
site
sky
soil
trench
vehicle
work
yellow