機器
activity
architecture
background
build
builder
building
cement
concrete
construction
contractor
employment
equipment
gravel
industrial
industry
infrastructure
job
labor
machinery
man
material
metal
mix
mixer
mixing
mortar
outdoor
pavement
paving
pour
public
reinforcement
road
sand
service
sidewalk
site
steel
street
surface
technology
tool
truck
urban
wet
work
worker
定額
Mobile concrete mixer at the construction site. Close-up of gravel being loaded into a concrete making machine.の素材 [FY310181509870]
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