male inspection engineers standing on top of a wind turbine and looking beautiful landscape - mill 個影片檔及 b 捲影像00:12
in the coastal plain area, there are large areas of solar power stations, and huge wind turbines are running. yancheng city, jiangsu province, china. - mill 個影片檔及 b 捲影像00:23
windmill farm in the lake ijsselmeer the biggest in the netherlands,sustainable development, renewable energy - mill 個影片檔及 b 捲影像00:34