单词	forepump
释义	forepump noun : a vacuum pump auxiliary to a more effective pump for which it supplies a first stage of exhaustion called also backing pump Word History Etymology fore- + pump
随便看	feculae feculence feculences feculency feculent fecund fecundate fecundated fecundates fecundating fecundation fecundations fecundative fecundator fecundatory fecunder fecundest fecundities fecundity fed fed (on, upon, or off) fed off fed on fed on, upon, or off fed up

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