英文關鍵字
array
blue
brush
cells
clean
cleaning
close
collector
conservation
covered
disposable
eco
ecologic
ecological
ecology
electrical
electricity
energy
environment
environmental
generator
house
invention
mop
moping
panel
panels
panes
photovoltaic
power
reflection
renewable
resource
responsibility
rood
roof
save
saving
solar
someone
substantial
sun
sunlight
sustainability
sustainable
technological
useful
warming
wash
washing
water
welfare
whole
worker