英文關鍵字
building
cable
climbing
construction
crane
dangerous
daytime
electric
electrical
electrician
electricity
energy
equipment
face
glasses
group
hardhat
hazard
high
holder
industrial
job
labor
line
lineman
look
male
man
men
occupation
outdoor
people
person
power
professional
repair
rope
safety
service
stair
summer
together
tower
uniform
voltage
wires
work
worker
wrench