| 单词 | vacuum |
| 释义 | vacuum (once / 1371 pages) nv A vacuum is essentially a great lack of something — a place where virtually all matter, even air, has been removed. It can describe something that's literally empty — or something that just seems that way, like a political vacuum. You probably have a vacuum at home. A humble household appliance named after a principle of physics, the vacuum is a device for sucking up dirt off the ground. It works by creating a vacuum — that is, it sucks all the air out of a particular place so that the surrounding atmospheric pressure will flood in, taking with it all the nacho chips, dog hair, toast crumbs, and whatever else you have lying around your house. WORD FAMILYvacuum: vacua, vacuumed, vacuuming, vacuums USAGE EXAMPLESAnother is Unibot, a robotic vacuum cleaner that trebles up as a mobile home security camera and an air purifier/humidifier. BBC(Jan 01, 2017) “ISIL thrived in a vacuum in Iraq and it pointed to a similar vacuum in Afghanistan,” Mr. Rhodes said. New York Times(Jan 01, 2017) A contractor used vacuum trucks to begin cleaning the creek. Washington Times(Dec 31, 2016) 1n an empty area or space without their support he'll be ruling in a vacuum Syn|Hyper emptiness, vacancy, void space an empty area (usually bounded in some way between things) 2n the absence of matter Syn|Hyper vacuity emptiness the state of containing nothing 3n a region that is devoid of matter Syn|Hyper vacuity part, region the extended spatial location of something 4n an electrical home appliance that cleans by suction Syn|Hypo|Hyper vacuum cleaner Hoover a kind of vacuum cleaner home appliance, household appliance an appliance that does a particular job in the home 5v clean with a vacuum cleaner vacuum the carpets Syn|Hyper hoover, vacuum-clean clean, make clean make clean by removing dirt, filth, or unwanted substances from |
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