英文關鍵字
adult
are
business
caucasian
communication
computer
computers
control
data
energy
engineer
engineering
equipment
factories
factory
foreman
helmet
holding
industrial
industry
job
keypad
lathe
machine
machinery
machines
maintenance
male
man
management
manufacturing
metal
new
occupation
operation
operator
people
plant
power
process
production
professional
project
robotic
service
software
staff
standing
stressing
system
tablet
technician
technology
using
work
worker
workers
working
workplace
workshop