英文關鍵字
afternoon
amper
architecture
arm
block
building
cable
city
copter
countryside
danger
day
daylight
distribution
electric
electricity
energy
flat
fly
gopro
green
high
home
line
metal
modern
moscow
network
outdoor
outside
phantom
pole
power
quadrocopter
russia
steel
structure
summer
supply
technology
tower
town
transmission
tree
urban
volt
voltage
warmth
watt
wire