age
black
build
city
construction
construction site
drainage
engineering
equipment
excavation
green
ground
horizontal
industrial
industry
infrastructure
insulation
iron
metal
modernization
municipal
network
new
no people
nobody
outdoor
pipe
pipeline
pipes
plumbing
reconstruction
repair
replacement
road
sewage
sewer
sewerage
site
soil
steel
street
supply
system
technology
trees
trench
tube
water
work
定額
Closeup view of two new insulated water pipes on city road in summer day. Urban sewerage infrastructure concept, modernization and reconstruction of underground water system.の素材 [FY310155123984]
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