dud [dʌd]

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n. �·����Ƶ���������
adj. ���õ�

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n. bomb��flop��misfire��washout

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1. The crucial round is a dud.
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2. "It's a dud, I guess, " said the goose.
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3. How can we be expected to carry out our jobs with the dud equipment you gave us?
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n.
  1. someone who is unsuccessful
  2. an explosion that fails to occur
  3. an event that fails badly or is totally ineffectual
adj.
  1. failing to detonate; especially not charged with an active explosive

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dud
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nuclear dud
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Dud torpedoes
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flare dud
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dwarf dud
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