機器
colleague
architect
background
broken
builder
building
business
construction
construction site
construction worker
contractor
control
danger
dangerous
engineer
engineering
equipment
factory
fall
hand
helmet
industrial
industry
job
male
man
manufacturing
metalwork
occupation
painful
people
professional
protect
protection
protective
safe
safety
safety equipment
safety first
security
site
steel
survey
team
teamwork
technician
work
worker
workplace