单词	air purifier
释义	air purifier noun : a device that removes contaminating particles (such as dust, pollen, and dander) from the air Air purifiers that draw air through fabric filters are among those that do the best job of removing dust and smoke from the air without producing any ozone. Consumer Reports, December 2007 Ionic air purifiers work roughly the same way, with negative ions attaching to smoke and dust particles that are, in turn, attracted to positively charged plates and filters. Paul Chavez, Pittsburgh Tribune Review, 14 Apr. 2008 air purification noun an air purification system Word History First Known Use 1957, in the meaning defined above
随便看	emphatic state emphatical emphatically emphatics emphlyses emphractics emphysema emphysemas emphysematous emphysematous anthrax emphysematous gangrene emphysemic emphyteuses emphyteusis emphyteuta emphyteutae emphyteutic empid Empidae Empididae Empidonax empiecement empiecements empierce empire

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