英文關鍵字
excavator
bucket
dirt
construction
tractor
pile
machine
industry
site
drive
loader
earth
industrial
work
vehicle
equipment
heavy
machinery
transportation
working
development
excavation
hydraulic
digger
scoop
soil
technology
day
英文關鍵字
excavator
bucket
dirt
construction
tractor
pile
machine
industry
site
drive
loader
earth
industrial
work
vehicle
equipment
heavy
machinery
transportation
working
development
excavation
hydraulic
digger
scoop
soil
technology
day