英文關鍵字
activity
bucket
building
bulldozer
camion
car
construction
dig
digger
disposal
dozer
driving
duty
earthmover
equipment
excavating
excavation
excavator
field
ground
heavy
hydraulic
industrial
industry
ladle
loader
machine
machinery
mechanical
mining
mover
power
quarry
scoop
shovel
sign
site
soil
technology
tipper
tractor
transport
truck
vehicle
work
yellow