liquidity
  流動性,流暢
  Li·quid·i·ty n.  The state or quality of being liquid.
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  liquidity
       n 1: the state in which a substance exhibits a characteristic
            readiness to flow with little or no tendency to disperse
            and relatively high incompressibility [syn: liquid, liquidness]
       2: the property of flowing easily [syn: fluidity, fluidness,
           liquidness, runniness]
       3: being in cash or easily convertible to cash; debt paying
          ability