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19-letter words containing k, o, b, i

  • to rack your brains — If you rack your brains, you try very hard to think of something.
  • to take the biscuit — If someone has done something very stupid, rude, or selfish, you can say that they take the biscuit or that what they have done takes the biscuit, to emphasize your surprise at their behaviour.
  • trickle bed reactor — A trickle bed reactor is a reactor in which gravity makes a gas and a liquid flow through a bed of catalyst.
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