英语词汇“pumice”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pumice
释义	pum·ice I. \ˈpəmə̇s\ noun or pumice stone (-s) Etymology: Middle English pomis, from Middle French pomis, from Latin pumic-, pumex — more at foam 1. : a white, gray, yellowish, brownish, or rarely red volcanic glass that is light in weight because it is full of cavities produced by the expulsion of water vapor at a high temperature as lava comes to the surface and that is used especially in powder form for smoothing and polishing : hardened volcanic froth 2. : a piece of pumice especially for use in polishing, blotting, or erasing 3. obsolete : something that is as dry as pumice II. transitive verb (-ed/-ing/-s) : to clean, smooth, or treat with pumice
随便看	position micrometer position paper positions position target position vector positival positive positive positive acceleration positive afterimage positive birefringence positive block positive buoyancy positive clutch positive column positive definite positive easement positive electricity positive electron positive feedback positive form positive fraud positive G positive law positive lens

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