英文關鍵字
activity
build
building
construct
construction
contractor
daylight
development
dig
digger
dirt
ditch
earth
equipment
excavate
excavating
excavation
excavator
grass
heavy
hydraulic
industrial
industry
large
loader
machine
machinery
massive
mover
object
power
sand
scoop
shovel
site
soil
structure
stump
tree
vehicle
work