機器
activity
area
asphalt
backhoe
bricks
building
bulldozer
concrete
construction
crusher
crushing
debris
demolish
demolishing
demolition
destroy
devastation
disassemble
dismantling
dust
equipment
excavator
hammer
heavy
house
hydraulic
industrial
industry
junk
machinery
material
rebuilding
recycling
reinforced
remove
rocks
ruin
shatter
site
stone
structure
tool
vehicle
waste
work
wreck