词典释义：
a dark mark or stain, typically one made by ink, paint, or dirt
墨水迹；油漆斑；污渍
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an ink blot .墨渍。
a shameful act or quality that tarnishes an otherwise good character or reputation
（品性、名誉上的）污点，耻辱
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the only blot on an otherwise clean campaign. 在其他方面堪称清白的运动中的唯一污点。
a thing that mars the beauty or perfection of something
有损（整体）美感的东西，瑕疵，美中不足
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wind power turbines are a blot on the landscape. 风力涡轮机有损美好风景。
【生化】 印迹法。
dry (a wet surface or substance) using an absorbent material
（用吸水材料）吸干，擦干
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Henry blotted the page. 亨利把那一页用吸湿材料擦干了。
【生化】 印迹。
mark or stain (something)
弄脏，涂污
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[as adj.
blotted ]the writing was messy and blotted. 书写乱七八糟，墨渍斑斑。
tarnish the good character or reputation of
玷污…的品性（或名誉）
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the turmoil blotted his memory of the school .骚乱破坏了他对那所学校的美好记忆。
(
（用墨水）涂去（字迹），（用颜料）盖去（图画）。
obscure a view
使模糊，遮蔽
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a dust shield blotting out the sun .挡去阳光的防尘装置。
obliterate or disregard something painful in one's memory or existence
从记忆中抹去，丢弃
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the concentration necessary to her job blotted out all the feelings .她的工作需要精神集中，这使她没有任何感觉。
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blot one's copybook Brit. tarnish one's good reputation 玷污自己的名声，给自己抹黑
"late Middle English： probably of Scandinavian origin and related to Old Norse