英文關鍵字
action
activity
arm
blade
blue
build
building
bulldozer
closeup
construction
constuction
development
dig
digger
dirt
earth
earthmover
eathmoving
environment
equipment
excavate
excavating
excavation
excavator
ground
heavy
hydraulic
industrial
industry
large
loader
machine
machinery
metal
mine
mover
outdoors
pit
power
sand
shovel
site
sky
soil
tractor
unloading
vehicle
work
yellow