機器
architecture
background
backhoe
building
bulldozer
cement
civil
concrete
construction
contractor
development
digging
drain
drainage
earth
engineer
engineering
equipment
excavation
excavator
foreman
ground
heavy
hydraulic
industrial
industry
labor
land
loader
machinery
man
pipe
road
safety
sand
scoop
shovel
site
system
tractor
trench
uniform
vehicle
water
work
worker
定額
Engineer wear safety uniform examining excavation concrete Drainage Pipe and manhole water system underground at construction site.の素材 [FY310155483181]
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