英文關鍵字
arm
backhoe
breaker
bucket
building
bulldozer
construction
cracking
demolition
development
diesel
dig
digger
dirt
ditch
dredger
earth
earthworks
engineering
equipment
excavate
excavating
excavation
excavator
extraction
gravel
ground
hydraulic
industrial
industry
land
loader
machine
machinery
mechanical
mine
mover
pit
scoop
shovel
site
soil
technology
tool
tractor
transport
trench
vehicle
work