blotchn. 大斑點、汙斑、疹塊汙點、斑點學術名詞印花色底:紡織科技滿底印紋:紡織科技斑點:醫學斑痣病:植物學斑枯病:植物學英文釋義an irregularly shaped spotmark with spots or blotches of different color or shades of color as if stained