英文關鍵字
energy
internet
industrial
eco
solar
farm
saving
system
power
wind
turbine
fuel
generation
environmental
conservation
renewable
turbines
industry
ecology
carbon
dioxide
alternative
sky
clouds
electricity
generator
green
sustainable
windmill
technology
ecological
electric
electrical
environment
environmentally
evening
friendly
generating
orange
propeller
silhouette
windy
sunset
smart