機器
bad
belt
business
careful
casual
communication
concept
construction
emergency
employee
engine
engineer
equipment
female
first aid
hurt
industrial
industry
injury
journey
labor
lifestyle
mad
maintenance
manufacturing
mechanic
men
overalls
people
person
pointing
problem
professional
repair
safety
scream
service
support
talking
technical
technician
tool
vacations
vehicle
worker
working
workman
workshop
young