有孔虫 feet foraminifer; foraminiferalooze; foraminiferan; foraminifers 扁卷虫(有孔虫) planorbulina ..
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N any marine protozoan of the phylum Foraminifera, having a shell with numerous openings through which cytoplasmic processes protrude 有孔虫 (Often shortened to foram) → see also globigerina, nummulite
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