英文關鍵字
background
blue
cable
city
column
communication
connection
construction
current
danger
drawing
electric
electrical
electricity
energy
equipment
high
illustration
industrial
industry
internet
isolated
light
line
nature
network
old
outdoor
outdoors
pole
post
power
pylon
retro
rural
silhouette
sky
supply
tall
technology
telephone
tower
transmission
urban
utility
vintage
voltage
wire
wood
wooden