单词	precipitron
释义	precipitron noun pre·​cip·​i·​tron prēˈsīpə‧ˌträn, prə̇ˈs- plural precipitrons : an electrostatic air-cleaning apparatus that ionizes floating particles of dust, pollen, fumes, and smoke and then precipitates the particles on charged collecting elements usually in the form of plates —formerly a U.S. registered trademark Word History First Known Use 1938, in the meaning defined above
随便看	finders' leather finderscope finding finding (for or against) finding fault finding fault (with) finding fault with finding for or against finding list finding out findings Findlay Findon haddock finds finds (for or against) finds fault finds fault (with) finds fault with finds for or against finds out findspot fine fine aggregate fine and dandy fine art

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