英文關鍵字
adult
blue
cell
clothing
construction
electric
electricity
electrification
energy
engineering
foreman
gear
guy
hard
hat
helmet
high
industrial
industry
jacket
job
line
looking
male
man
men
metal
objects
occupation
one
outdoors
people
phone
plant
pole
power
profession
professional
protection
safety
steel
talking
technology
tower
transformer
vest
voltage
wire
wiring
worker