an image from the US government EPA "Sunwise" program. I converted it from PDF format, and removed all the "sunwise" logos. the source link is here - http://www.epa.gov/sunwise/doc/guide.pdf
簡單的太陽圖案
epa、epa sunwise、externalsource、Formen、sun、sunlight、sunny、weather
EPA、epa sunwise、外部源、形狀、孫、陽光、晴朗、天氣
資料來源：openclipart ( https://openclipart.org/ )