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VERB
把…弄糟;做…时出差错
If you muff something, you do it badly or you make a mistake while you are doing it, so that it is not successful.
例句
He muffed his opening speech.
他的开幕讲话搞砸了。
...a muffed opportunity.
错失的机会
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N-COUNT
(防寒用的)毛皮短筒，手笼
A muff is a piece of fur or thick cloth shaped like a short hollow cylinder. You wear a muff on your hands to keep them warm in cold weather.
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N-PLURAL
muffs 同 earmuffs
Muffs are the same as earmuffs .