The original posting by oldifluff was a raster image. So here is a vector version. 風力渦輪機矢量化 energy、Logo、oldifluff、remix+244476、renewable、science、turbine、wind、windmill 能源、商標、oldifluff、混音+ 244476、可再生、科學、渦輪、風、風車 資料來源:openclipart ( https://openclipart.org/ )