英文關鍵字
alternative
cell
clean
collector
crystalline
dandelion
eco
ecological
ecology
electrical
electricity
energy
environment
environmental
equipment
farm
field
flower
future
generation
generator
grass
green
grid
ground
horizon
industry
innovation
meadow
modern
move
nature
panel
photovoltaic
plant
power
renewable
sky
solar
summer
sun
sunlight
sunny
supply
sustainable
system
technology
view
weed
wind