機器
40s
building
buildingsite
caucasian
clipboard
construction
engineer
engineering
frontview
guy
happy
hard
headphone
individualbusiness
industrial
interior
job
kneeling
man
mature
middleaged
occupation
oneperson
people
photogenic
pipe
plumber
portrait
selfemployed
skilled
smallbusiness
smiling
standing
timber
vertical
work
worker
working