vacuum

noun

/ˈvækjuːm/

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a space that is completely empty of all substances, including all air or other gas真空
- a vacuum pump (= one that creates a vacuum)真空泵
- vacuum-packed foods (= in a package from which most of the air has been removed)真空包装的食品
Extra Examples
- Other gases rush in to fill the vacuum.其他气体涌进来充满真空。
- The machine then creates a vacuum.这样机器便制造出一个真空。
Topics Physics and chemistryc1
Oxford Collocations Dictionary
adjective
- perfect
- cultural
- moral
- …
verb + vacuum
- create
- leave
- produce
- …
See full entry
[usually singular] a situation in which somebody/something is missing真空状态；空白；空虚
- His resignation has created a vacuum which cannot easily be filled.他的引退造成了难以填补的空白。
- The writer criticized the moral vacuum in society.作家批评了社会的道德缺失。
Oxford Collocations Dictionary
adjective
- perfect
- cultural
- moral
- …
verb + vacuum
- create
- leave
- produce
- …
See full entry
[usually singular] the act of cleaning something with a vacuum cleaner（用真空吸尘器所做的）清洁，清扫
- to give a room a quick vacuum用吸尘器把房间迅速清扫一下

Word Originmid 16th cent.: modern Latin, neuter of Latin vacuus ‘empty’.

Idioms

in a vacuum

existing separately from other people, events, etc. when there should be a connection与世隔绝；脱离实际
- This kind of decision cannot ever be made in a vacuum.这种决定绝不能脱离实际。

verb

/ˈvækjuːm/

[transitive, intransitive]

Verb Forms

present simple I / you / we / they vacuum	/ˈvækjuːm/ /ˈvækjuːm/
he / she / it vacuums	/ˈvækjuːmz/ /ˈvækjuːmz/
past simple vacuumed	/ˈvækjuːmd/ /ˈvækjuːmd/
past participle vacuumed	/ˈvækjuːmd/ /ˈvækjuːmd/
-ing form vacuuming	/ˈvækjuːmɪŋ/ /ˈvækjuːmɪŋ/

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vacuum (something) to clean something using a vacuum cleaner用真空吸尘器清扫 synonym hoover
- Have you vacuumed the stairs?你用吸尘器清扫楼梯了吗？
Topics Houses and homesb2
Word Originmid 16th cent.: modern Latin, neuter of Latin vacuus ‘empty’.