n.撤空，抽空，排空
His vacuity was a handicap in these debates.
在这些辩论中，思想贫乏是他的一个弱点。
Bertha thought it disconcerted him by rendering evident even to himself the vacuity of his mind.
伯莎认为这对他不利,这种情况甚至清楚地向他自己证明了他心灵的空虚.
Temperature and vacuity rising can enhance osmotic flux visibly.
升高温度和降低膜下游压力可明显提高膜的渗透通量.