colleague
black
built
clothing
communications
computer
construction
conversation
daytime
design
developer
development
discussing
discussion
electrician
employment
examining
foremaster
hard hat
hardhat
home
housing
industrial
inspection
laborer
lifestyle
machinery
maintenance
management
occupation
occupations
operator
plant
power
protective
safety
service
site manager
standing
structure
talking
technology
urban
workman
workplace
yellow
定額
Two engineers stood wearing a safety helmet. Standing at the pier And holding the blueprint And consult the plan In the construction. Concept of efficient construction management.の素材 [FY310131524239]
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