英文關鍵字
worker
support
leg
crane
truck
construction
site
anchor
rod
ground
fix
steel
vehicle
heavy
machinery
work
equipment
machine
working
industry
industrial
transportation
development
excavation
hydraulic
digger
day
scoop
technology
英文關鍵字
worker
support
leg
crane
truck
construction
site
anchor
rod
ground
fix
steel
vehicle
heavy
machinery
work
equipment
machine
working
industry
industrial
transportation
development
excavation
hydraulic
digger
day
scoop
technology