音标：[ 'vækjuəm ] 发音：
过去式: vacuumed 过去分词: vacuumed 名词复数: vacuums 现在分词: vacuuming
- The mixture is then distilled in vacua .
- No vacuum or picture tubes were broken .
- The whole apparatus operates under high vacuum .
- The vacuum valve opens to admit air .
- Into the vacuum came the new york conservative party .
- Clearly, management doesn't operate in a vacuum .
- They were conscious of a vacuum after his departure .
- She vacuumed the carpet .
- But what these should be cannot be decided in a vacuum .
- The canister vapor-vent value is operated by vacuum .
- an electrical home appliance that cleans by suction
- a region that is devoid of matter
- an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he''ll be ruling in a vacuum"
同义词：void, vacancy, emptiness,
- the absence of matter
- clean with a vacuum cleaner; "vacuum the carpets"
Vacuum is space that is empty of matter. The word stems from the Latin adjective vacuus for "empty" or "void".