英文關鍵字
adult
building
construction
discussing
electric
electricians
electricity
energy
engineer
engineering
equipment
facility
foreman
gesture
gloves
hardhat
heavy
helmet
industrial
industry
inspection
job
logistics
male
man
manufacture
manufacturing
mechanic
occupation
outdoors
outside
people
planning
power
production
profession
professional
project
protective
safety
talk
technician
uniform
walking
winter
work
worker
working
workman
workplace