機器
adult
apprentice
builder
building
chief
clothing
construction
crane
development
elegant
elevate
employee
engineer
engineering
executive
gears
girl
heavy
helmet
horizontal
human
illustration
industrial
industry
isolated
job
labor
lift truck
machinery
man
metallic
people
person
person working
picking
profession
professional
protective
repairing
road
site
steel
surveyor
tool
wall
wheels
worker
working