กังหันลม, ต้นไม้, สนาม, หญ้า, ทุ้งหญ้า, ทุ่งหญ้า, กังหัน, พลังงานหมุนเวียน, พลังงานลม, เทคโนโลยี, การอนุรักษ์
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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