单词	air cleaner
释义	air cleaner noun : any of various devices for removing impurities (as suspended particles) from air (as by filtering, washing, or electrostatic precipitation) Word History First Known Use 1893, in the meaning defined above
随便看	pensums pensy pensée pent pent d'é pent road pent roof pent- pent-up penta- pentacarbonyl pentachloride pentachlorophenol pentachlorophenols pentachord pentachords pentacid pentacle pentacles pentacontane pentacosane pentacrinite pentacrinoid pentacrinoids Pentacrinus

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