機器
activity
architecture
big
blue
bucket
build
building
bulldozer
construction
construction industry
construction site
cut
demolition
development
dig
dirtied
duty
earth
engineering
equipment
excavate
excavating
excavation
excavator
heavy
industry
infrastructure
job
land
large
loader
machinery
mine
mining
power
power shovel
quarry
sand
scoop
shovel
site
sky
structural engineering
tire
tractor
under construction
vehicle
work
working
yellow