If someone or something creates a vacuum, they leave a place or position which then needs to be filled by another person or thing.
例句
The collapse of the army left a vacuum in the area...这支军队的溃败使这个地区出现了军事真空。His presence should fill the power vacuum which has been developing over the past few days.他的出现将填补过去这几天形成的权力真空。
PHRASE
在封闭状态中;与外界隔绝
If something is done in a vacuum, it is not affected by any outside influences or information.
例句
Moral values cannot be taught in a vacuum...道德价值观的教育不能脱离实际。We lived in a vacuum — no life, no news, no books.我们生活在与世隔绝的环境里——没有其他生物，收不到外界消息，也没有书看。
VERB
用真空吸尘器打扫
If you vacuum something, you clean it using a vacuum cleaner.
例句
I vacuumed the carpets today...今天我用吸尘器清洁了地毯。It's important to vacuum regularly.定期用吸尘器吸尘很重要。
N-COUNT
真空
A vacuum is a space that contains no air or other gas.
例句
Wind is a current of air caused by a vacuum caused by hot air rising...风是由于热空气上升产生真空导致的一种气流运动。The spinning turbine creates a vacuum.旋转的涡轮形成了一块真空区域。