機器
actions
boulder
breaking
built structure
bulldozer
collapsing
concrete
construction
construction equipment
construction machinery
construction material
construction site
construction vehicle
cracked
crushed
demolition hammer demolishing
destruction
dirty
dust
earth mover
excavation vehicle
heavy industry
hill
hinge
hydraulic platform
impact
industrial equipment
industry
jackhammer
jackhammer arm
nobody
place of work
pneumatic drill
power
removing
road construction
rock
rubble
ruined
sand
sledgehammer
steel
stone
strength
urban scene
viaduct
vibration risk
working