英文關鍵字
alternative
background
beautiful
clean
concept
conservation
development
eco
ecological
ecology
electric
electrical
electricity
energy
environment
environmental
factory
farm
generate
generation
generator
global
green
illustration
industrial
industry
innovation
landscape
mill
modern
natural
nature
plant
power
propeller
renewable
resource
rotate
rotation
silhouettes
sky
station
sun
sunset
sustainability
symbol
technology
tower
tree
turbine
turbines
using
wind
windmill