英文關鍵字
background
backgroundn
cartoon
character
construction
duty
engineer
engineering
explain
factory
front
gas
green
guy
hand
heavy
helmet
illustration
industrial
industry
isolate
isolated
labor
man
manufacturing
move
notify
offshore
oil
people
person
petrochemical
petroleum
plant
point
portrait
ppe
presenting
professional
safety
side
site
something
staff
stand
teach
technician
told
training
transparent
vector
vest
white
worker