an image from the US government EPA "Sunwise" program. I converted it from PDF format. the source link is here - http://www.epa.gov/sunwise/doc/poster.pdf
女孩w毛巾大綱
beach、cartoon、coloring book、Dive Into A Book - Summer Reading 2016、epa、epa sunwise、girl、line art、outline、Shiny Happy People、summer、towel
海灘、動畫片、填色本、潛入一本書 - 夏季閱讀2016、EPA、epa sunwise、女孩、線條藝術、大綱、閃亮的快樂的人、夏季、毛巾
資料來源：openclipart ( https://openclipart.org/ )