英文關鍵字
arc
arcing
are
beard
camera
contractor
control
coverall
craftsperson
danger
electric
electrical
electrician
electricity
energy
engineer
engineering
examining
eyes
face
factory
flash
generally
hard
hardhat
hat
helmet
industrial
industry
inspection
job
labor
looking
man
manufacturing
mask
mechanic
occupation
person
portrait
professional
protect
protective
renovation
repairing
repairman
safety
service
shield
shields
smile
smiling
success
technician
technology
uniform
wearing
wiring
work
worker
working
workplace
workwear
worn