英文關鍵字
rural
indiana
innovation
energy
industrial
sustainability
greenery
semirural
sunlight
electricity
usa
environment
ecofriendly
daytime
landscape
infrastructure
photovoltaic
英文關鍵字
rural
indiana
innovation
energy
industrial
sustainability
greenery
semirural
sunlight
electricity
usa
environment
ecofriendly
daytime
landscape
infrastructure
photovoltaic