機器
break
bridge
civil engineering
civil engineering site
civil engineering work
construction
construction industry
construction machinery
construction site
countryside
crane
demolition
demolition work
destruction
disaster
disaster prevention
dismantling
dump
dump car
earth and sand
excavator
firstclass river
flood
flood disaster
flooding
guerrilla downpour
heavy equipment
heavy machinery
heavy rain
helmet
japan
landscape
movable weir
natural disasters
new construction
newly established
operator
removal
removal work
river expansion
river expansion work
rivers
site
torrential rain
turbidity
under construction
water rising
weir
work clothes