英文關鍵字
bucket
build
builder
building
bulldozer
caterpillar
concrete
construction
cracking
crush
demolition
development
diesel
dig
digger
dirt
ditch
dredger
earth
earthworks
engineering
equipment
excavate
excavating
excavation
excavator
ground
hydraulic
industrial
industry
land
loader
machine
machinery
mechanical
mine
mover
pit
sand
scoop
shovel
site
soil
technology
tractor
transport
trench
vehicle
work