英文關鍵字
action
activity
backhoe
bucket
building
bulldozer
business
camion
closeup
construction
dig
digger
disposal
dumper
earthmover
equipment
excavate
excavation
excavator
field
heavy
hydraulic
industrial
industry
ladle
loader
machine
machinery
mechanical
mine
mining
pit
power
produce
sand
scoop
shovel
site
sky
slow
soil
technology
tipper
transport
truck
vehicle
wheel
work