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	chasmy Chassagne-Montrachet chasse-café chasse-marée chassed chasseing chassepot chassepots chasses chasseur chasseurs chassez chassezes chassid chassidic chassidim chassignite chassis chassé chassé-croisé chassé-croisés chasséd chasséing Chastacosta chastacostas

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