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历史:
CET-4 CET-6 考研 TOEFL IELTS BNC: 5526 COCA: 4930

vacuum

1 vacuum /ˈvæˌkjuːm/ noun
plural vacuums
1 vacuum
/ˈvæˌkjuːm/
noun
plural vacuums
Learner's definition of VACUUM
[count]
: an empty space in which there is no air or other gas真空
: a space from which all or most of the air has been removed(气体被排出后形成的)真空
: a situation created when an important person or thing has gone and has not been replaced空虚;空白usually singular通常用单数

in a vacuum

: separated from outside events or influences与外界隔绝;不受外界影响
2 vacuum /ˈvæˌkjuːm/ verb
vacuums; vacuumed; vacuuming
2 vacuum
/ˈvæˌkjuːm/
verb
vacuums; vacuumed; vacuuming
Learner's definition of VACUUM
: to clean (something) with a vacuum cleaner用真空吸尘器清扫
[+ object]
often + up
[no object]

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