英文關鍵字
alternate
alternative
blue
business
cell
clean
climate
collector
direction
eco
ecology
efficiency
electric
electrical
electricity
energy
environment
environmental
equipment
farm
follow
fuel
generate
generation
generator
green
industry
innovation
light
motion
natural
nature
panel
park
passing
photovoltaic
power
renewable
science
sky
solar
station
sun
sunlight
sunny
supply
sustainable
technology
time
timelapse