พลังงานแสงอาทิตย์, เหรียญทอง, แดด, ผลิตกระแสไฟฟ้า, เงิน, ทอง, ทุ่งหญ้า, เนินเขา, ท้องฟ้า, พราว, ฤดูร้อน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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