機器
architect
architecture
build
builder
building
business
clothing
concrete
construction
contractor
engineer
engineering
equipment
foreman
hammer
hard
hardhat
helmet
house
illustration
industrial
industry
job
labor
laborer
maintenance
male
man
manual
occupation
people
person
plan
profession
professional
project
protection
protective
repair
safety
scaffolding
site
team
tool
window
work
worker
working