機器
architect
arm
artificial
assembly
automated
automotive
boss
business
call
career
caucasian
check
checking
clipboard
communication
computer
connected
construction
control
development
discussion
electronic
engineer
engineering
equipment
factory
helmet
industrial
industry
job
machinery
manager
manufacturing
men at work
person
phone
professional
radio
safety
tablet
talk
technician
technology
uniform
woman
work
workplace
workshop
young