1. 真空,空白：vacreator 真空杀菌器 | vacuity 真空,空白 | vacuo 真空

2. 空虚：vacua 空虚 | vacuity 空虚 | vacuole 空泡

3. 真空度：vaccum bag molding 真空袋塑法 | vacuity 真空度 | vacuo-junction 真空热电偶

4. 真空：vacuator /抽空机/真空浮渣池/ | vacuity /真空/ | vacujet /真空捕尘凿岩机/

1. (思想的)贫乏,空洞,空虚
    If you refer to the vacuity of something or someone, you are critical of them because they lack intelligent thought or ideas.

vacuity在线翻译

    e.g. 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。
    e.g. ...a campaign notable for its intellectual vacuity and personal nastiness.
           以思想空洞和人身攻击闻名的竞选活动

1. total lack of meaning or ideas

    Synonym: inanitysenselessnessmindlessnesspointlessness

2. a region that is devoid of matter

    Synonym: vacuum

3. the absence of matter

    Synonym: vacuum