cough up
 被迫付出,勉強說出,吐出


 Fork, v. t. To raise, or pitch with a fork, as hay; to dig or turn over with a fork, as the soil.
    Forking the sheaves on the high-laden cart.   --Prof. Wilson.
 To fork over To fork  out, to hand or pay over, as money; to cough up. [Slang]

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 cough up
      v 1: give reluctantly; "He coughed up some money for his
           children's tuition" [syn: pony up, spit up]
      2: discharge (phlegm or sputum) from the lungs and out of the
         mouth [syn: expectorate, cough out, spit up, {spit
         out]