英文關鍵字
asia
cable
cloud
country
danger
electric
electrical
electricity
energy
environment
fog
forest
high
hill
industrial
industry
landscape
line
meadow
mist
misty
mountain
mystery
natural
nature
network
outdoor
park
pole
power
radio
ray
rural
season
silence
sky
steel
summer
sun
sunrise
sunset
supply
tower
transmission
tree
view
voltage
white