英文關鍵字
asian
building
caucasian
computer
construction
controlling
development
engineer
engineering
equipment
facility
factory
female
foundry
gesture
hard
hardhat
hat
heat
heavy
helmet
industrial
industry
interior
job
line
logistics
machinery
male
man
manager
manufacture
manufacturing
mechanical
metal
metalwork
modern
operating
people
plant
power
production
safety
scale
screen
steel
tablet
technology
using
welding
woman
work
worker
workshop