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	J/psi particle JA ja jaal goat jab Jabal Katrinah jabal katrinah jabalina Jabalpur Jabalya jabalyah jabalí Jabarite jabbed jabber jabbered jabberer jabberers jabbering jabberings jabbernowl jabbers jabberwockies jabberwocks jabberwocky

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