英文關鍵字
man
technology
equipment
power
line
person
energy
electricity
electrical
pillar
voltage
construction
connection
cable
electric
work
tower
repair
worker
service
communication
wire
pole
engineering
engineer
background
helmet
maintenance
safety
crane
technician
standing
occupation
uniform
danger
hand
lifting
emergency
phone
confident
information
unrecognizable
hard
lift