機器
activity
break
breaker
build
concrete
construction
demolition
destroy
destruction
dig
digger
dirt
drill
drilling
dust
earth
earth work
engineering
equipment
excavation
excavator
ground
hammer
head
heavy
hydraulic
industrial
industry
jack
loader
machinery
power
rebuilding
repair
road
rock
shovel
site
steel
stone
technology
tool
transport
vehicle
work
worker
yellow