英文關鍵字
activity
area
asphalt
backhoe
boom
bricks
building
bulldozer
clearing
construction
crusher
crushing
danger
debris
demolish
demolishing
demolition
destroy
devastation
disassemble
dismantling
dust
excavator
hammer
house
hydraulic
industrial
junk
machinery
material
rebuilding
recycling
reinforced
remove
rocks
ruin
shatter
site
stone
structure
tile
tool
waste
wreck