Recycle water, water drop from rg1024(openclipart.org/detail/20448/set-of-water-drops-by-rg1024) and recycle clip art from egore911(openclipart.org/detail/27073/recycling-by-egore911) 回收水 aqua、clip-art、earth、environment、green、harvest、problem、rain、savem recycle、water、Water AQUA、剪貼畫、地球、環境、綠色、收成、問題、雨、救援回收、水、水 資料來源:openclipart ( https://openclipart.org/ )