词典释义：
mark (something) with coloured patches or dirty marks that are not easily removed
沾污，弄脏；染污
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her clothing was stained with blood 她的衣服上沾有血迹
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[as adj.
stained ]a stained beer mat 一个有污渍的啤酒杯垫子
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[no obj.]
red powder paint can stain .红色的粉末颜料能造成污迹。
[no obj.]be marked or be liable to be marked with such patches
被沾污；易被染污。
〈喻〉 玷污，败坏（名声，形象）
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the awful events would unfairly stain the city's reputation .这些糟糕的事件会败坏这个城市的名声，这是不公平的。
suffuse (something) with brighter or darker colour
使布满更亮（或更暗的）色彩
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the flush stained her cheeks again .她的双颊再一次布满红晕。
colour (a material or object) by applying a penetrative dye or chemical
给（材料，物体）上色，给（材料，物体）着色
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wood can always be stained to a darker shade .木材总是可以被染成更深的色调。
a coloured patch or dirty mark that is difficult to remove
污点，污迹
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there were mud stains on my shoes .我的鞋上有泥渍。
a thing that damages or brings disgrace to someone or something's reputation
污点，瑕疵
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he regarded his time in gaol as a stain on his character .他认为在监狱的那段时间是他人格上的污点。
a patch of brighter or deeper colour that suffuses something
色素斑
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the sun left a red stain behind as it retreated .太阳落下时留下一块红斑。
a penetrative dye or chemical used in colouring a material or object
染色剂，着色剂。
【生】 染色剂，着色剂。
【纹章】 （纹章和徽章的）辅助色，次要颜色（尤指棕褐色和血红色）。
"late Middle English （as a verb）： shortening of archaic
