英文關鍵字
business
circular
craft
elements
employee
employment
engineering
factory
fingers
flame
flaming
glasses
glove
hardhat
heavy
human
indoors
industrial
industry
job
labor
laborer
laser
machine
man
manufacturing
mask
people
pipeline
place
production
protection
safety
skill
sparks
steel
tool
torch
welding
work
worker
working
workplace
workshop
workwear