n.流动性；流质；变移性
英英释义
"adding lead makes the alloy easier to cast because the melting point is reduced and the fluidity is increased"
"they believe that fluidity increases as the water gets warmer"
"a charming Oriental fluidity of manner"
"a certain fluidness in his perception of time made him an unpredictable colleague"
"demographers try to predict social fluidity"
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