英文關鍵字
cable
connection
construction
danger
dangerous
electric
electrical
electrician
electricity
energy
engineer
engineering
high
industry
job
labor
lifting
line
lineman
linesman
man
manual
mechanic
pillar
pole
post
power
powerpole
professional
repair
repairman
safety
serviceman
sky
system
technician
tool
voltage
wire
work
worker
working