vacuum
noun uk/ˈvæk.juːm/ us/ˈvæk.juːm/
(EMPTY SPACE)
[ C or U ]真空
a space from which most or all of the matter has been removed, or where there is little or no matter
[ S ]缺乏，空白
a lack of something
The withdrawal of troops from the area has created a security vacuum which will need to be filled. 部队撤军之后，那个地区出现了一个有待填补的安全真空。
in a vacuum 似在真空中;与世隔绝
kept separate from other people and activities
No artist works in a vacuum - we are all of us influenced by others. 没有哪个艺术工作者可以脱离现实——我们都受到他人的影响。
(CLEANER)
[ C ]真空吸尘器（同 vacuum cleaner）
a vacuum cleaner
vacuum
verb [ I or T ] uk/ˈvæk.juːm/ us/ˈvæk.juːm/ (UK also hoover)
用吸尘器清扫
to use a vacuum cleaner to collect dust, dirt, etc.
Vacuum (up) the cake crumbs, would you? 请用吸尘器把面包屑清理掉，好吗？