สีลม, ภูเขา, ชนบท, เป็นมิตรกับสิ่งแวดล้อม, ลม, ที่ยั่งยืน, ทดแทน, นิเวศวิทยา, พลังงาน, กังหันลม, สถานีพลังงานลม
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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